This is a 28 silver Rubles coin set from the 1980 USSR (Union of Soviet Socialist Republics - now Russia) Summer Olympics.
This set includes (14) 10 Ruble coins & (14) 5 Ruble coins from the Soviet Union. The coin features the State Emblem of the Soviet Union, which includes a hammer and sickle, a globe, and wheat sheaves. The text "РУБЛЕЙ" translates to "Rubles," and "СССР" is the Cyrillic abbreviation for the Union of Soviet Socialist Republics.
Content: 20.2552 troy oz. fine proof silver for set or 630 g total
Mint: Mint of Goznak of the Ministry of Finance of the USSR
5 Rubles Weight: 16.6683 g or 15.001 grams fine silver per coin x 14 coins = 210.01 g total
10 Rubles Weight: 33.3118 g or 29.999 grams fine silver per coin x 14 coins = 419.99 g total
5 Rubles Weight: .5359 ozt per coin gross
10 Rubles Weight: 1.071 ozt per coin gross
5 Rubles Diameter: 33 mm
10 Rubles Diameter: 39 mm
5 Rubles Thickness: 2.4 mm
10 Rubles Thickness: 3.3 mm
5 Rubles Fine Silver Weight: .4823 ozt fine silver per coin x 14 coins = 6.7522 ozt total
10 Rubles Fine Silver Weight: .9645 ozt fine silver per coin x 14 coins = 13.503 ozt total
Purity: 90.0%
Year: 1977, 1978, 1979 and 1980
