podzemnik collection
5 Roubles.
70 years of the revolution. 
The biggest copper-nickel coin (39.3 mm) are issued in circulation in the USSR.


Cu-Ni.
5 Roubles. 70 years of the revolution. The biggest copper-nickel coin (39.3 mm) are issued in circulation in the USSR. Cu-Ni.
Europe
Russia
1987