1977 AD., USSR, Leningrad mint, 1 Rouble commemorative October Revolution, KM Y 143.

Russia, USSR, Soviet Union (1961 - 1991), 60th anniversary of Bolshevik (October-) Revolution commemorative, engravers: A.V. Kozlov and V.P. Zaytsev, Leningrad mint, 1977 AD.,
1 Rouble (31 mm / 12,58 g), copper-nickel-zinc alloy, mintage 5.000.000 (13.250 proof) , medal alignment ↑↑ ,
Obv.: 1917-1977 , head of Vladimir Lenin facing left, Aurora-Monument to the Conquerors of Space and atom model left, ship below, dates and olive branch below.
Rev.: СС - СР / 1 / РУБЛЬ , national arms, value below.
Edge: smooth with incuse lettering: ОДИН РУБЛЬ • ОДИН РУБЛЬ • (One ruble one ruble).
KM Y 143 .