USSR
Acknowledged, but not listed by SG.
| Country: | USSR |
| Type: | Postal blocks |
| Series: | 2nd UN Conference on Exploration of Space |
| Nominal: | 8*15 k |
| Year: | 1982 |
| Material: | coated |
| Perforation: | comb 11½ |
| Mintage: | 12,500 |