1961-1991 - Soviet Union (USSR) - 20 Kopeks
The ruble or rouble(code: RUB) is the currency of Russia. Formerly, the ruble was also the currency of the Russian Empire and the Soviet Union before their dissolution. The ruble is subdivided into 100 kopeks (sometimes written as kopecks or copecks; Russian: копе́йка, kopeyka; plural: копе́йки, kopeyki).
REF
Coins of the USSR of a sample 1961
Source: senal2000.hobby.ru
Coins of a new sample with changed design of both sides were issued. Besides again coins 50 copecks and 1 rouble have appeared. A material and sizes of all coins are not changed.
There was 15 tapes on the State Emblem of the USSR on number of the union republics entered into the USSR.
Years: 1961-62, 65-90
Value: 20 copecks
Composition: copper-nickel alloy
Diameter: 21, 8 mm
Mass: 3.6 g
REF
USSR 20 kopeks 1980
Source: en.ucoin.net
Krause number Y# 132
Country USSR
Period Soviet Union (1961 - 1991)
Coin type Circulation coins
Denomination 20 kopeks
Year 1980
Composition Copper-Nickel-Zinc
Edge type Milled
Shape Round
Alignment Medal (0°)
Weight (gr) 3.4
Diameter (mm) 21.8
Thickness (mm) 1.4
REF
20 Kopéek 15 ribbons
Source: en.numista.com
Y# 132
Features
Country Soviet Union (USSR)
Years 1961-1991
Value 20 Kopéek (0.20 SUR)
Metal Copper-nickel-zinc
Weight 3.3 g
Diameter 22 mm
Thickness 1.5 mm
Shape Round
Orientation Medal alignment ↑↑
Demonetized yes
Edge Reeded
REF