USSR
0.34 - 0.41$
price on 03.03.2023
Unique serial number at top left.
| Country: | USSR |
| Type: | Postal blocks |
| Series: | Environmental Protection |
| Nominal: | 50 k |
| Year: | 1984 |
| Material: | coated |
| Size: | 90 x 65 mm |
| Perforation: | frame 12¼ x 12 |
| Mintage: | 700,000 |