USSR
0.65 - 0.78$
price on 28.02.2023
| Country: | USSR |
| Type: | Postal blocks |
| Series: | Cosmonautics Day, 1973 |
| Nominal: | 3*20 k |
| Year: | 1973 |
| Material: | Chalk surfaced |
| Size: | 75 x 100 mm |
| Perforation: | frame 12 x 11½ |
| Mintage: | 900,000 |
Cosmonautics Day, 1973
 Cosmonautics Day, 1973 0.65$ |  Cosmonautics Day, 1973 4.9$ |