USSR
Stamp from Souvenir sheet.
Not listed by SG.
Not listed by SG.
| Country: | USSR |
| Type: | Postage stamps |
| Series: | Environmental Protection |
| Nominal: | 50 k |
| Year: | 1984 |
| Size: | 26 x 38 mm |
| Perforation: | frame 12¼ x 12 |
| Mintage: | 700,000 |
