Imperial silver rouble

The Imperial silver rouble was the principal silver coin denomination of the Russian Empire. Although silver rouble coins had initially entered circulation in 1654, it was under the reign of Peter the Great that Russia completely shifted to domestically minted silver rouble coins. Through Peter's major monetary reform in 1704, introduced shortly before the formal establishment of the Russian Empire, the coin was minted as a circulating decimal issue divided into 100 copper kopecks, making it the first decimal currency in Europe.

The denomination developed out of medieval units of weight, having replaced the grivna as Russia's primary accounting unit during the fourteenth and fifteenth centuries following its first recorded chronicle mention in 1316. Once struck as a domestically produced coin from 1704, the imperial silver rouble was issued over two centuries across successive reigns. It remained in regular use as the primary imperial silver standard until 1897, when the gold rouble succeeded it until 1917, after which the imperial currency was officially replaced by the Soviet rouble in 1922.

In terms of physical specification, Peter the Great ordered the 1704 circulating silver rouble to be struck at a weight of 28 grams (0.90 troy ounces), pegged to the value of 100 new copper kopecks. Produced across more than two hundred years, the coins featured changing monarchical portraits and adjusting physical standards. Inscriptions on the currency were rendered in Russian, with numerals ending in one followed by the nominative singular form рубль (rubl), distinguishing the single rouble unit from divisional fractions and higher denominations.