USSR
1.7 - 2$
price on 16.10.2022
Acknowledged, but not listed by SG.
| Country: | USSR |
| Type: | Postal blocks |
| Series: | 6th All-Union Philatelic Society Congress |
| Nominal: | 6*10 k |
| Year: | 1989 |
| Material: | coated |
| Perforation: | comb 12 x 12¼ |