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Silver ruble of Peter I
Russia, AD 1705
Coin issed under Peter the Great as the basic value of Russian decimal coinage
The Russian Tsar, Peter I (Peter the Great) (1682-1725), was fascinated by western European science and culture, and travelled widely in the pursuit of knowledge. He studied navigation and shipbuilding and became proficient, among other things, in the construction and working of guns. He also involved himself in the minting of Russia's new coins. As a student of mechanics he became knowledgeable in mining and metallurgy, which ultimately resulted in the implementation of the monetary reforms begun in Russia around 1700.
In the seventeenth century, Russian coinage was based on the kopek. At the turn of the new century, Peter decimalized the Russian currency, fixing the ruble at 100 kopeks. Machinery was introduced into Russian coin production. The royal House of Romanov, with the Tsar at its head, continued to issue these coins, with heraldic emblems, monograms and portraits, until the Russian Revolution of 1917, and the end of Romanov rule.
J. Cribb, B. Cook and I. Carradice, The coin atlas (London and Sydney, Macdonald Illustrated, 1990)