 Since the monetary reform of 1534, one Russian accounting ruble became equivalent to 100 silver Novgorod denga coins or smaller 200 Muscovite denga coins or even smaller 400 "polushka" coins.Exactly the former coin with a rider on it soon became colloquially known as "kopek" and was the higher coin until the beginning of the 18th century.Ruble coins as such did not exist till Peter the Great, when in 1704 he reformed the old monetary system and ordered mintage of a 28-gramme silver ruble coin equivalent to 100 new copper kopek coins.