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…

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German coins since 1871 - from Reichsmark to Euro
With the adoption of the constitution of the German Empire on April 16, 1871, responsibility for the currency of the empire passed from individual federal states to the government of…

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Byzantine coins (ca. 500-1453)
The fall of the Roman Empire was in the late Middle Ages, at least in the east of Europe. After the death of Emperor Theodosius I in 395, the Roman…

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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

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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What is the cost of silver coins of Tsarist Russia
We can safely say that silver coins of tsarist Russia of 1700 - 1917, will definitely be able to delight everyone, even the most fastidious and demanding coin collector, otherwise…

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Where can I sell coins on the Internet
If the “old” coin collectors still prefer to sell and buy coins for the collection “from hand to hand”, then collectors of the 21st century have been doing this for…

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