Coin collecting as a hobby
Modern collectors collect various items. Some collect stamps, others - coins, and there are those that are particularly original. Collecting coins is very popular, because everyone who has found or…

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Banknotes and paper money (VIII-XX century)
The history of paper money is just as exciting and varied as the history of metallic money. At the beginning of the history of paper money, there were two forms…

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Yuri Pokras on how the Violiti Internet auction works
We talk about the largest Internet site for the sale of antiquities in the post-Soviet space with the famous Kiev collector, Violiti website administrator Yuri Pokrass. - How many years…

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Valuable little thing. How to make money on investing in rare coins
Rare coins can grow in price by hundreds of percent over ten years. What influences their value and how to find assets attractive for investment in this market? Old coins…

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copper carbonate

Cleaning of old coins

The purpose of this message is to acquaint interested readers with the most simple and safe methods of cleaning coins, which the author can recommend based on his many years of experience in the restoration of an archaeological metal at the State Hermitage Museum. Clearing coins is one of the crucial types of restoration, it is important for their study, dating, identification and storage. Ancient coins made of silver and copper alloys, found in treasures or in other archaeological excavations, most often enter the restoration workshop highly corroded, and sometimes completely mineralized. Under the action of water and salts, copper is destroyed in the soil to form green carbonates and chlorides, red cuprous oxide and black oxide. Continue reading

FALSIFICATION AND COINS
The whole history of numismatics is a kind of struggle with various fakes and other types of falsification. Even novelists, going from hands to hands of collectors, out of ignorance…

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On the fate of coin stamps of the St. Petersburg Mint
Mikhail Ivanovich Smirnov, the archivist of the St. Petersburg Mint, published an interesting article in the 6th issue of the Old Coin: “The Mints Cabinet and the Museum of the…

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