1937 No sig Suffix XX, Xx, xX, xx Intro: 1938 1 червонец (chervonets)
Details
Obverse: Russian text; state emblem of the USSR; Vladimir Ilyich Lenin
Reverse: Armenian, Azerbaijani, Belorussian, Georgian, Kazakh, Kirghiz, Russian, Tajik, Turkmen, Ukrainian, and Uzbek text; guilloches