I get
 | 1$ 30th Anniversary of World War II1 pc 1 ruble 1975  USSR |
 | 1.7$ 70th Anniversary of Revolution1 pc 1 ruble 1987 USSR |
 | 0.28$ 20th Anniversary of World War II1 pc 1 ruble 1965 USSR |
 | 1.1$ XXII summer Olympic Games, Moscow 1980 - Emblem1 pc 1 ruble 1977 USSR |
Piece: 4
Total: 4.1$