10 Kopek 1931
15 Kopek 1932
20 Kopek 1932
These nice looking coppernickel coins replaced the silver kopeks in 1931 because the value of Russian money had been decreasing after the end of 1920's. Coins depict a worker man holding a shield with denomination, surrounded by text "СOЮ3 СOBETCKИX СOЦИAЛИCTИЧECKИX РECПУБЛИK", Union of Soviet Socialist Republics. On the other side is the national ars surrounded by very famous phrase " ПРОЛЕТАРИИ ВСЕХ СТРАН, СОЕДИНЯЙТЕСЬ!" meaning "Workers of the world, unite!".
Unfortunately these "worker coins" were replaced in 1935 by very plain coins depicting only the national arms and denomination on square field.
