4th All-Union Philatelic Society Congress
50 k 1979
USSR
0.44 - 0.53$
price on 28.02.2023
| Country: | USSR |
| Type: | Postal blocks |
| Series: | 4th All-Union Philatelic Society Congress, Moscow |
| Nominal: | 50 k |
| Year: | 1979 |
| Material: | coated |
| Size: | 91 x 66 mm |
| Perforation: | frame 12 x 12¼ |
| Mintage: | 2,000,000 |