Opening an antique shop
Acquisition of antiques - it was and remains one of the most reliable ways to invest money, which allows you to ensure a stable income in the amount of 20-50%…

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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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Franz Joseph I Commemorative Coins
From December 2, 1848, Franz Joseph I was Emperor of the Austrian Empire and King of Bohemia, Apostolic King of Hungary. Franz Ripl in 1829 gave the emperor the idea…

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Vintage German coins and medals
Coinage in the territory of the German state from the end of the Middle Ages (XV century) and until the introduction of the imperial state currency in 1871 is without…

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soda solution

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

Numismatists will be able to collect collectible cryptocurrencies
The most popular electronic currency has once again puzzled its followers. Just a couple of days, the bitcoin rate again fell from 11,500 to 8,500 dollars. But such sharp jumps…

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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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