USSR
Stamp from Souvenir sheet.
Not listed by SG.
Not listed by SG.
| Country: | USSR |
| Type: | Postage stamps |
| Series: | Preserve Nature and the World |
| Nominal: | 50 k |
| Year: | 1983 |
| Size: | 28 x 40 mm |
| Perforation: | frame 11½ |
| Mintage: | 700,000 |