Oriental coins (VII-XXI century)
The conquerors of the territories that previously belonged to Byzantium were not familiar with the coinage before the reign of Muhammad, and therefore the history of the Arab coinage begins…

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Commemorative coins
In the new history there are many anniversaries, celebrations, coronations, which you can almost always find out by looking at the coins issued in honor of this event. A Soviet…

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European coins and medals (XVI-XXI century)
New time in numismatics begins in Europe around 1500 in the lands of the Habsburgs. In 1486, by order of the Archduke Sigismund (1439-1490), the Tyrolean guldengros was minted. It…

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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

Ancient coins
1. Old coins of Russia - gold and silver coins of Prince Vladimir These were the first coins minted in Kievan Rus at the end of the 10th century, then…

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Medieval coins (ca. 500-1500)
Medieval coins (ca. 500-1500)The Middle Ages spanned 1,000 years of European history, starting with the earliest chased coins of the German successor states of the Roman Empire during the Great…

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Interesting facts from the history of collecting
The origins of collecting lead in antiquity. Notable people collected antiques and art objects and decorated them at home. In the I-II century BC in ancient Rome, the market of…

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