Why do St. George the Victorious bullion coins become stained? Rusty gold central bank

There is still a heated discussion on the Internet about the situation at the Mint in St. Petersburg, when rust suddenly began to appear on the “St. George the Victorious” gold coins issued by this yard. Scandal, what can I say! What? And they steal here!?

"Yes!" - German Sterligov, a well-known Russian businessman and public figure, said on the Dozhd TV channel.

But is this really so?

A very serious investigation was carried out and everything was resolved in the most prosaic way. It turns out that this is a matter of imperfection, or rather, a violation of technology. Part of the metal shavings, literally microns, as a result of non-compliance with technology, fell on the surface of the coins. Over time, this “gold” began to become stained.

But, strictly speaking, this is not the first time investors have encountered such behavior of gold coins. From time to time, the press services of banks report the indignation of their clients who, after a year of storing their gold coins in safe deposit boxes, suddenly take them out with “rusty stripes.” Such cases were noted by employees of North-West Sberbank and Khanty-Mansiysk Bank.

As for the defects themselves, it must be said that this problem is not new. Periodically, individual batches of coins appear, on the surface of which, after 2-3 years (depending on storage conditions), various turbidities, changes in color or reflective properties appear. All of these changes are nothing more than a manufacturing defect, and a superficial one at that. The reasons for its appearance most likely lie in the ingress of foreign chemical impurities onto the surface of the stamp, possibly during its cleaning, although more detailed information could probably only be provided by mint technologists.

Head of Operations in Financial Markets at Rus-Bank Stanislav Filippov

The situation is very unpleasant, so banks try not to advertise such incidents. The main thing is that our main bank, Sberbank, recognizes the problem, accusing its partners of wanting to “not wash dirty linen in public.”

A variety of reasons have been put forward. The above production errors are obvious. But it turns out that some people believe that:

• Considering the state of the atmosphere and its influence on everything around, after 5 years the storage of traces on the “gold” still cannot be avoided;
• We just don’t wash our hands well, and sweat contains urea and fat, which have a detrimental effect on the surface of coins;
• Storage conditions are not clean enough.

On the other hand, if we consider the chemistry of all processes, and after all, “St. George the Victorious” was produced from gold of the 999th, highest standard, then in principle the given reasons should not exist. If a gold coin leaves the Court in perfect condition, it should remain that way for centuries.

All this talk about sweat, urea and fluoride in toothpaste is just an excuse and a desire to cast a shadow over the fence.

Yes, gold is affected by cyanide compounds, bromine, mercury, but God forbid you encounter them in ordinary life, it was not enough for our hands to be in mercury.

Scientifically speaking, patina and gold are completely incompatible things. If there is a patina, then the problem is with the gold, and not in some mythical reactions “from the press services of banks.”

On the other hand, there is no doubt - if it is announced that the 999th sample was used in production, then this is so.

There is only one conclusion that all bankers come to, albeit reluctantly: rust is a consequence of mistakes technological process manufacturing. We started with this, reasoned and weighed all the opinions, made a circle, and came to the same thing. You can’t say: “They’re stealing, gentlemen!” (even at the Mint!). But the fact that they work, and here, carelessly, is beyond any doubt.

It should also be noted that although the Central Bank admitted the mistake, it is in no hurry to correct it. Although the scandal erupted back in 2010, rust on coins of the St. Petersburg Mint (SPMD) also appears on coins of 2015. To be fair, it must be said that on a much smaller scale. By the way, this is precisely what determines the slightly lower price compared to products from the Moscow Mint (MMD), where such defects were not observed.

What to do if your coins are covered with “rust”?

The first thing you need to do is calm down. Your coin is completely genuine and contains exactly as much precious metal as stated.

There is really nothing wrong with these stains; they are superficial, easily removed with simple chemicals, and have virtually no effect on the sample.

Head of Precious Metals Department of Ak Bars Bank Azat Salyakhutdinov

Stains can be removed. It’s just not recommended to do this yourself; without the proper experience and knowledge, you can only aggravate the situation, which will lead to a real decrease in the value of the coin. It is best to contact a jewelry workshop, where the coin will be cleaned quickly and safely. Average cost cleaning procedures for one golden Victorious 50-100 rubles.

You can leave the coin in the same condition. Most investors already know about the causes of the problem and do not focus on it. And the difference in price between a “normal” and a “defective” coin is 200-300 rubles. And sometimes it’s not there at all.

Well-known entrepreneur German Sterligov made a sensational statement in mid-July: investment coins from precious metals, which the Central Bank produces, supposedly rust, which means they are not cast from pure metal. He came to this conclusion by simply burying his “golden” under a tree, like Pinocchio. As a result of storage in such conditions, brown spots appeared on gold coins with a purity of three nines after the decimal point, which resembled rust...

Let us remember that pure gold does not oxidize, and therefore rust simply cannot form. At the same time, German Streligov only stated a fact, giving others the opportunity to inflate the topic to the size of a large-scale scandal, which forced the Central Bank to justify itself. Leading business publications in Russia devoted editorials to this topic. However, it seems to us that German Sterligov’s goal was not at all to check the Central Bank for lice; this could have been done simply by taking the coins for examination; there was no need to go the way of Pinocchio. However, German Sterligov, who was “scorched” in the corporate wars of the early 90s, knew what he was doing; he finally decided that the time had come to “say what he thinks,” as was once the case in the advertising of his company “Alice.” The story of burying gold under a tree became free advertising for his new project - the International Reserve Settlement System.

On the website of the Anti-Crisis Settlement and Commodity Center, which is also the brainchild of German Sterligov, it was reported that it was decided to create in Moscow the equivalent of Gokhran - Russia's first professional independent storage facility for gold and other precious metals. It will differ in that individuals and legal entities will be able to use its services, and the accepted values ​​will be 100% insured. However, the previous project of the enterprising ex-owner of the funeral service bureau, and even earlier - the farmer and founder of the Alice corporation, as far as we know, was a fiasco: the project of the Anti-Crisis Settlement and Commodity Center promoted by Sterligov did not take place in its originally announced form. As far as is known, Sterligov filed for bankruptcy of ARTC with a “reorganization” of the business. The main emphasis will be on the ability to freely convert paper money into gold coins. And the regional ARTC network should be transferred to a new project - the “International Reserve Settlement System”. The center's activities largely boiled down to the purchase and sale of coins made of precious metal. Already ongoing transactions with coins made of precious metals forced the company to face a number of issues in establishing the authenticity and safety of the coins. Namely, the problems of safety and authentication are currently one of the key arguments for attracting customers in the company.

Vice President of the First Republican Bank Dmitry Orlov:

Indeed, physical precious metals (coins, bars...) are not a very popular investment instrument. This is due to the fact that exiting these instruments is quite difficult - both for clients and for banks. Indeed, in order to carry out a buyback of, for example, investment coins, it is necessary to conduct a mini-examination. This is quite expensive, so now, for example, there are more banks on the market selling coins than those who are ready to buy them back. In addition, do not forget about the VAT that arises when buying and selling. Anonymized metal accounts are much more popular, when metal is not physically purchased, but its equivalent is paid for, which is taken into account by the bank. This is a much more liquid instrument, which is easier for both the client and the bank to work with. But both the first and second are in demand among a limited group of investors. For the most part, deposits still remain the most popular instrument for most clients.

Chief Economist of Finam Management Aleksandr Osin:

At the beginning of July of this year, the managing director of the G. Sterligov group of companies, I. Zhiznevsky, said: “Currently the gold market is inadequate. As confirmation, we can cite the report of the so-called non-profit organization Gold Anti-Trust Action Committee (GATA) in the USA, which regularly writes letters to the Securities Commission and the United States department of the Treasury. In its latest reports, GATA directly points to the collusion of the central banks of leading European countries and the Federal Reserve, which are deliberately playing against gold. The situation that we observe in the market, namely the “swing,” will end only when the “bubble” created in the paper gold market due to the huge number of short positions collapses. The volume of short positions is 1.5 times higher than the volume of gold production in the world, that is, the supply of the metal is now being generated artificially, that is, a so-called bubble is being created.” According to Mr. Zhiznevsky, if we talk about the volume of physical gold, then the demand for these assets in reality exceeds supply several times. “If this situation became real, then prices now would probably be three to four times higher than on today’s market: instead of $1,240 per ounce, we would see about $3,000-3,500 in the real supply and demand market. ounce,” he noted. Against this background, Mr. Sterligov’s statement that there are foreign impurities in the investment coins of the Bank of Russia reflects both his general “bullish” position in the gold market and his more than once demonstrated rejection of modern policies in the field of finance and economics of developed countries and the Russian Federation.

Deputy Head of the Analytical Department of the Investment Company "Grandis Capital" Timur Khairullin:

Gold coins in Russia are not as popular compared to bank deposits or even investments in stocks or bonds. Coins made of gold or other precious metals are a specific investment instrument. Among the advantages of coins is their reliability - during periods of crisis, they lose their value no less than gold. For example, during the 2008 crisis, when the value of the main exchange assets fell by 50-70%, the price of gold decreased by only 11%. Gold coins and bars are also suitable for force majeure events such as wars, revolutions and other socio-political disasters. The disadvantages of investing in coins include high transaction costs and low liquidity. Thus, it is difficult to quickly sell coins without losing value, and taxes must be paid when selling them. Moreover, the growth in the value of gold and its derivatives remains lower on average compared to alternative instruments. Accordingly, gold coins will be most interesting for collectors and conservative investors focused on long-term investment. As a rule, such investors prefer reliability and are willing to put up with low returns on investments.

Expert of the assessment department "2K Audit - Business Consulting" Petr Klyuev:

Today, when the economic situation is still unstable, investment coins are a good investment tool. Investors prefer conservative assets that are protected from complete depreciation. But it is necessary to take into account the fact that such investments should be long-term and you should not expect income from them. Coins and bars made of precious metals will help preserve savings, but not increase them, given that monetary policy and financial stability of individual states are not reflected in fluctuations in the price of gold. But if we compare, we can note that neither bank deposits, nor securities, nor cash foreign currency today provide real profitability, losing to inflation. Also, investing in coins allows you to diversify your investments. As for the quality of the coins, it can be assumed that there was negligence in the production process. The quality of the minting of investment coins, in contrast to commemorative ones, leaves much to be desired. When making coins under pressure, iron may have remained in the microcracks of the coins themselves and, as a result, characteristic stains appeared.

A selection of materials for those who are interested in the topic:the appearance of "rust" on gold coins !
Source - http://wzascok.livejournal.com/6505.html

As a former chemist, this topic also turned out to be interesting to me, especially since at one time I inherited a rather impressive collection of coins.
True, I have never seen rusty gold coins with my own eyes, although there are quite a few of them, maybe gold was different before? ... at least I've never met a rusty oneNicholas gold chervonets, and rusty gold Finnish markstimes of the Russian Empire...
Well, in general, read, draw conclusions, my opinion is thatthe reason still lies both in the stamp itself and in the coin stamping technology.

21.02.11/18:31

Recently, information about “rusty” gold coins “St. George the Victorious” has periodically begun to appear. Sometimes they say that a patina has appeared on the “St. George the Victorious” coins. Entrepreneur German Sterligov was the first to report this phenomenon several months ago. He published photographs of coins that clearly showed stains that were a different color than the coin. FinNews.ru decided to look into this problem and found out the following.
Do "rusty" coins exist?

Only a few of the banks surveyed admitted that their clients were faced with the problem of “rusty” coins. The press service of Sberbank of Russia reported: “There were cases when they brought “Victorious” coins, which most often have red spots and/or stripes on coins, for a return purchase to Sberbank, but they handed them back not because of the spots, but just like coins." The press service of North-West Sberbank said: “Yes, such coins do exist.” The press service of the Khanty-Mansiysk Bank reported: “In one of the branches, the client kept them in a safe deposit box. He came to pick them up, and there were “rusty” stripes on them.”

Other banks (including those playing a significant role in the precious metals market) either denied the presence of such problematic coins with their clients, or ignored questions from FinNews.ru. Since the largest player in the precious metals market (Sberbank) admitted the existence of a problem, the silence or denial of such a problem by other banks indicates either the insignificance of their real role in the precious metals market (there are not many “rusty” coins, so they have not yet come across such coins ), or about trying to bury your head in the sand.

What do the bankers say?

Some banks have made "everyday" assumptions about the reasons for the appearance of "rust" on gold coins. Thus, SMP Bank suggested that “This is a “patina”, it appears after 5 years of storage, like on jewelry with a long shelf life. They clean it, like jewelry, with a special composition.” The North-Western branch of Ak Bars Bank suggested that “Rust is oxides of gold (chemically pure) from contact with hands that are not perfectly clean. Sweat contains a lot of urea. A lot of things can end up on our hands after we have touched everything around yourself, brushed your teeth with fluoride paste, or touched mercury-containing batteries. Head of Department plastic cards, commission, savings and investment products of Absolut Bank, Elena Novikova said: “It is not recommended to touch the coin with your hands, since the fingerprint left on its surface (especially on the mirror field) is practically impossible to remove. Even if the mark is successfully cleaned It is possible that fatty residues invisible at first glance will enter into a chemical reaction with the composition of the surface of the coin and later oxidation spots will appear in this place.” In the cash department money circulation The Bank of Russia stated that “in some cases, depending on storage conditions, stains may appear on them, which are metal oxides and microscopic particles of various substances falling on the surface of coins. The presence of stains does not characterize coins as defective.”

To understand how true these assumptions are, it is necessary to brush up on your chemistry knowledge. Those who studied well at school and/or college may not read the next chapter. For the “victims of Fursenko” we will report the following.

The Science of Gold, Rust and Patina

The same cash circulation department of the Bank of Russia reported that " gold coin with a face value of 50 rubles, “St. George the Victorious” is a coin of investment value, the mass of the precious metal in purity is 7.78 grams, the gold purity is 999". A purity of 999 means that one kilogram of coins will contain 999 grams of gold and only 1 gram of impurities of other metals (usually silver and copper) What does science say about the physical and chemical properties of gold?

Pure gold is a soft yellow metal. Gold is very malleable and malleable (for example, from a piece of gold weighing one gram you can stretch a wire three kilometers long or make gold foil 500 times thinner than a human hair - 0.1 microns). The softness of pure gold is so great that it can be scratched with a fingernail.

Gold is the most inert metal, standing in the series of stresses to the right of all other metals, under normal conditions it does not react with most acids and does not form oxides(emphasized by the editor), due to which it was classified as a noble metal, in contrast to ordinary metals, which are easily destroyed by the environment. Gold dissolves from pure acids only(emphasis added) in hot concentrated selenic acid: 2Au + 6H2SeO4 = Au2(SeO4)3 + 3H2SeO3 + 3H2O. In aqueous solutions of cyanides with access to oxygen, gold dissolves, forming cyanoaurates: 4Au + 8CN− + 2H2O + O2 → 4− + 4 OH−. Gold reacts with dry chlorine at ~200°C to form gold(III) chloride. In a concentrated aqueous solution of hydrochloric and nitric acids (regia vodka), gold dissolves to form chloraurate ion already at room temperature: 2Au + 3Cl2 + 2Cl− → 2−. Gold easily reacts with liquid bromine and its solutions in water and organic solvents, giving tribromide AuBr3. Gold reacts with fluorine in the temperature range 300−400°C; at lower temperatures the reaction does not occur. Gold also dissolves in mercury, effectively forming a low-melting alloy (amalgam). There are organogold compounds (for example, diethylgold bromide). All alloys above 750 fineness do not tarnish in air (that is, they are not covered with a thin film of oxides, editor's note).

What is rust? Rust is a common name for the result of the corrosion process of various metals. Corrosion (from Latin corrosio - corrosion) is the spontaneous destruction of metals as a result of chemical or physico-chemical interaction with the environment. From a chemical point of view, rusting, for example, of iron is oxygen corrosion of iron in water: 4Fe + 6H2O + 3O2 = 4Fe(OH)3. Hydrated iron oxide Fe(OH)3 is what is commonly called rust.

From the Great Soviet Encyclopedia it is known that patina (Italian patina) is a film of various shades (from green to brown) formed on the surface of products made of copper, bronze and brass as a result of metal corrosion under the influence of the natural environment or as a result of patination, that is, heating or treatment with oxidizing agents.

Domestic causes of rust are excluded

So, since the gold coins “St. George the Victorious” have a purity of 999, they should neither tarnish nor rust. Toothpaste containing fluoride compounds cannot damage the coin in any way. Exactly the same as urea. Cyanide compounds, as well as mercury and bromine, do not come into contact with humans in ordinary life. Traces of secretions from the skin's sweat and sebaceous glands can be easily cleaned with organic solvents, which will dissolve fat and wash away inorganic compounds, but the solvents will not interact with gold in any way.

The term “patina” does not apply to St. George coins, since they are made of gold, not copper. German Sterligov also spoke about this in one of his speeches: “I sent [the “St. George the Victorious” coin, editor’s note] for examination to the Institute of Steel and Alloys, and there the professors explained with a smile that patina and gold are two incompatible things. If there is gold, then there can be no patina. If there is patina, then it is not gold."

There is no doubt that the coin is made of 999 fine gold. If this were not so, it would have become known long ago. The fact is that “St. George the Victorious” coins have been used by jewelers in the production of jewelry since the very beginning of their sale in 2006 due to the absence of VAT in the price of such coins, as well as the high purity of the metal in these coins.

There is a contradiction - there shouldn’t be rust, but there is. Let us return once again to the commentary of the cash circulation department of the Bank of Russia: “In some cases, depending on the storage conditions, stains may appear on them, which are metal oxides and microscopic particles of various substances falling on the surface of the coins.” This comment is akin to saying - Newton explained why the apple fell, but did not explain how it ended up on the tree. So it is here - the Bank of Russia explained that rust appears due to microscopic particles, but did not explain how they appear on a coin stored in a plastic capsule in a bank safe.

What's really going on?

Fortunately, the world is not without good people. Representatives of the two banks quite logically explained the origin of the “rust” on gold coins.

Stanislav Filippov, head of the financial markets operations department at Rus-Bank, said the following: “As for the defects themselves, it must be said that this problem is not new. Periodically, individual batches of coins appear on the surface of which after 2-3 years (depending on conditions storage) various cloudings, changes in color or reflective properties appear. All of these changes are nothing more than a manufacturing defect, and the reasons for its appearance most likely lie in the ingress of foreign chemical impurities onto the surface of the stamp, possibly during its cleaning. "Probably only mint technologists could provide more detailed information."

Azat Salyakhutdinov, head of the precious metals department at Ak Bars Bank, said the following: “Rusty” coins and bars appear due to the presence of microscopic particles of iron on their surface, which are transferred there upon contact with an iron tool during the manufacture of a coin or bar. Typically this occurs during stamping or rolling. Rust is significantly larger in volume than the piece of iron that generated it (about 300 times), so what is invisible in the form of microscopic pieces of iron becomes visible in the form of rust after storage in a relatively damp room (sometimes the moisture that gets into the capsule along with air). Iron was transferred to coins during the rolling of sheets, during the manufacture of blanks for coins; in connection with the identified cases, an investigation was carried out at the mints, which determined the origin of the defect. Now, as far as we know, this has been eliminated in production, and the MRH carries out strict visual control of all coins sold. There are also such spots on ingots, but only on stamped ones and, as a rule, made on worn dies. Dies for gold coins are coated with gold, so rust cannot appear during this process, but at the refinery they treat this a little more easily.”

How to prevent coins from rusting?

Elena Novikova recommends “Store coins in a dry place without sudden changes in light and temperature. To remove a coin from a capsule if necessary, for example, for weighing it or for detailed inspection, there are special gloves or tweezers with soft tips. You can also purchase a special dust blower, chemical stain removers, storage boxes and capsules and other accessories for working with coins." However, as we have already found out above, gold is very inert, and ordinary light and temperature conditions do not affect it in any way. But the requirement for a dry room in the light of the above acquires key importance.

The press service of the Khanty-Mansiysk Bank recommends “Store at the required humidity and temperature,” without specifying the required humidity and temperature values. In addition, the bank itself admitted that a safe deposit box is not a place where the humidity and temperature necessary to prevent the appearance of traces of “rust” on coins are maintained.

It is obvious that the bankers' answers are affected by the obvious insufficiency of the knowledge they received at school in the natural sciences. Against this background, the so-called reforms of school education, carried out by the relevant ministry under the leadership of citizen Fursenko, will only lead to an even greater deterioration (albeit much worse) of the general level of education of the Russian population. Reforms, and, in fact, the destruction and degradation of school education must be stopped immediately.

But we digress. So, if a microscopic particle of iron appears on the surface of a gold coin due to a manufacturing defect, then it is not possible to prevent the “rusting” of such a coin. Rusting of iron is inevitable, because there is always water vapor and oxygen in the air, which cause corrosion.

What to do with "rusty" coins?

Bankers are unanimous in their opinion - there is no reason to panic.

Azat Salyakhutdinov believes that “There is really nothing wrong with these stains, they are superficial in nature, can be easily removed with simple chemicals, and have virtually no effect on the test quality.”

Stanislav Filippov believes that “Owners of coins on the surface of which the indicated defects have appeared, first of all, should not panic and get rid of such coins at any cost. If they were purchased from a bank with a good business reputation that has been operating in the financial market for a long time, then there is no doubt about their there is no authenticity. In any case, the cost of such coins cannot be lower than the value of the gold they contain. The buyer of the coins can only ask for a slight discount. appearance.

You should not change your preferences when choosing investment funds. Ordinary people who do not have the opportunity to store precious metals and products made from them in favorable conditions can be recommended to invest in gold through impersonal metal accounts. Gold on compulsory medical insurance is not accessible to thieves and will never “rust”!”

North-West Sberbank, when detecting “rusty” gold coins in cash centers, rejects them and sells them at a reduced price to UO/VSP clients through the branch network.

Press Secretary of VTB24 for the North-West federal district Ivan Makarov suggests that owners of “rusty” gold coins “Make claims about the quality of the coins to both the selling bank and the coin manufacturer.”

So, let's draw conclusions. The problem really exists. There are shortcomings in the production technology of gold coins and bars made by stamping, due to which the smallest particles of iron appear on the surface of some coins, invisible to the naked eye. Over time, these iron particles corrode and the corrosion products become visible to the naked eye. The defect is superficial and only worsens the appearance of the coin, without affecting its essence as a means of saving capital. If one or more of your coins have rust stains, there is no need to try to get rid of them immediately. The difference in price compared to a coin without rust is 50-200 rubles or approximately 0.5-2.0% of the coin’s price.

Why is the Bank of Russia “silent”?
Speaking of the manufacturer. In the case of “rusty” gold coins, the only thing that defies reasonable explanation is the position of the Bank of Russia. The coin issuer is completely indifferent to its reputation and the reputation of its product. We found out that the “rust” on the coin is the result of a manufacturing defect. That is, there are defective gold coins in circulation. It has long been accepted throughout the world that defective goods are replaced free of charge at the expense of the manufacturer. But the Bank of Russia does not react in any way to the current situation. It's been at least six months now. Not only that, according to Stanislav Filippov, the Bank of Russia does not buy coins back, and Russian banks do not have the opportunity to replace defective coins. So, the issues of repurchase of coins from the population by credit institutions are not regulated in any way by the Bank of Russia. This is what the regulator’s cash circulation department reported. Why doesn’t the Bank of Russia replace its defective coins? And when will he start doing this? Or can only a court decision in a case on consumer protection be able to force the Bank of Russia to fulfill its duties properly?

First of all, I decided to go to Sberbank and find out why stains on gold coins appeared, and whether they would accept the coin for purchase.

There is a large stain near the letter “I”, as well as other stains are visible along the edge of the coin.

The savings bank said that they would accept the coin without questions. not a hindrance, because the Central Bank issued an order in which coins with spots are equated to coins in excellent condition. The main thing is that there are no stains on the coin. Another important thing: At the price of gold, they only buy Pobedonostets and Sochi rectangular ones, the rest are considered not investment. And for my coin of 50 rubles 2015 Sochi Hockey, I was offered 16,500 rubles, which is currently lower than the price of metal in the coin (7.78g * 2600r = 20,228r - the price of metal). Therefore, there is no point in handing it over to the savings bank for purchase.

About the origin stains on gold coins I was told that this was a technological problem.

Theory 1:

I'm happy with my trip to Sberbank. But she continued the investigation. On the Internet I came across a very interesting version, it says that the appearance of such stains on gold coins, may be due to the fact that at the Mint, the stamp with which the coin is minted is not completely cleaned, and that particles of other metals remain on it. These very particles are imprinted into gold coins, and it is precisely these metals that remain on the surface of the gold coin that are oxidized, resulting in stains similar to rust appearing. This theory is quite interesting, I think it has its merits.

In order to be 100% sure and dispel any doubts, I will take this coin to a special laboratory, where they will analyze its composition. In order to verify the purity of the metal and that the coin really consists exclusively of 999 fine gold, we submit the coin for examination, where X-ray spectral and fluorescent analysis is carried out on it. This method is used to determine the concentration of elements in substances of various origins. Performs accurate measurements at high speed. It is based on the collection and subsequent analysis of the spectrum that appears when the material under study is irradiated with X-ray radiation. I would like to note that this method of determining precious metals does not destroy or damage the coin. The instrument error is up to 0.5%. Such an analysis is carried out in few places; for those who are interested, it can be carried out at the State Historical Museum for a certain amount of money. So, the analysis showed that the purity of the metal is 24 carats, which is the maximum purity, the gold content is 100%, with an error of 0.3%, that is Mint, The Central Bank and Sberbank are not deceiving us, in this case, it is not an impurity or dirty metal, but pure 999-carat gold.

Theory 2:

In the process of our little “investigation”, we talked with one of the managers of one of the largest jewelry factories in Moscow, which produced gold medals of the appropriate standard for Olympic Games 2014. He confirmed the formation of orange dots on gold. It was revealed that it was not the metal that was to blame, but the plastic capsules in which these medals were placed. After discovery "rust" on gold, the jewelers took the medals out of the capsules, washed them with a special chemical solution, the stains came off, they packed them back, and after just three days the stains appeared again. In my case, there is no marking on the capsule, the manufacturer is not known, so we cannot exclude the possibility that stains on gold coins Plastic capsules are to blame. Cleaning the coin, unfortunately, is not possible, since the coin is of PROOF quality and will be hopelessly damaged because it will lose its shine.

However, Sberbank will buy this coin even with stains (for them stains on gold coins not an indicator, since the Central Bank ordered Sberbank to accept coins with these spots), but Sberbank will buy them at the price indicated in their price list, in my case it is 16,500 rubles, but this is not profitable for me, since the price itself There is currently more metal than the price in the Sberbank price list. I found sites on the Internet that buy gold coins at metal prices, so if you urgently need money, it is more profitable to sell a coin there. They also accept gold coins with spots.