grivna. In Russian, a folk name for ruble, tselkovyj (целковый, , wholesome), is known, which is a shortening of the целковый рубль ("tselkovyj ruble"), i.e., a wholesome, uncut ruble. This name persists in the Mordvin word for ruble, целковой. 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 silver ruble coin equivalent to 100 new copper kopek coins. Apart from one ruble and one kopek coins other smaller and greater coins existed as well. English spelling Both the spellings ruble and rouble are used in English, depending on the author's native dialect. The earliest use recorded in English is the now completely obsolete robble. The form rouble is preferred by the Oxford English Dictionary and probably derives from the transliteration into French used among the Tsarist aristocracy. It may have been retained in English to avoid confusion with "rubble". In general, American, and some Canadian, authors tend to use "ruble" while other English speaking authors use "rouble". In American English there is a tendency for older sources to use rouble and more recent ones to use ruble. However usage is not consistent and major publications are known to use both (though usually preferring one or the other). The Russian plurals that may be seen on the actual currency are modified according to Russian grammar. Numbers ending in 1 (except for 11) are followed by nominative singular рубль rubl, копейка kopeyka. Numbers ending in 2, 3 or 4 (except for 12–14) are followed by genitive singular рубля rublya, копейки kopeyki. Numbers ending in 5–9, 0, or 11–14 are followed by genitive plural рублей rubley, копеек kopeyek. Other languages In several languages spoken in Russia and the former Soviet Union, the currency name has no etymological relation with ruble. Especially in Turkic languages or languages influenced by them, the ruble is often known (also officially) as som or sum (meaning pure), or manat (from Russian moneta, meaning coin). Soviet banknotes had their value printed in the languages of all