In 1725 was conducted in an attempt to start production of coins of large denomination from copper by the foot available to reduce the cost of silver. The result is a heavy coin-card with denominations from 5 cents to the ruble. They were extremely awkward to handle, so the release build failed. In 1771, in the town of Sestroretsk near St. Petersburg once again planned to organize production of copper rubles, but the cylindrical shape. At this time the idea was abandoned due to the complexity of production. Stamp from Sestroretsk ruble was also used in the minting of silver "Pugachev" ruble. In 1825, during the first days after the death of Alexander I began the minting of silver rubles, with the portrait of Constantine, which was supposed to take the throne. But Constantine abdicated in favor of his brother Nicholas, managed to produce only 8-9 coins from a non-existent Emperor. Under Nicholas I was issued a platinum coin of 3, 6 and 12 rubles from metal mined in the rich deposits of the Urals. Their production was discontinued in 1845, for various reasons. During the reign of Nicholas II on the eve of the monetary reform had come up with a new name of gold coins, to safely organise the decrease of their weight in half. So there was a "Rus" was not included in treatment and remaining test instances. In the late nineteenth century as a means of payment used are also refining the bullion. Silver, highlighted during the melting of gold nuggets in such bullion is returned to the prospectors.