Rouble
the unit of the Russian money system. The silver rouble before the World War was equivalent to about 80½ cents in United States gold. Half and quarter roubles were coined in silver, also gold coins of nominally five roubles (demi-imperials) and three roubles (imperial ducats). Paper roubles are the principal money in circulation.
Normally paper rouble is worth about 49 cents. The rouble is divided into 100 kopeks. capital of