USSR
Stamp from Souvenir sheet.
Not listed by SG.
Not listed by SG.
| Country: | USSR |
| Type: | Postage stamps |
| Series: | KOSPAS |
| Nominal: | 50 k |
| Year: | 1987 |
| Size: | 40 x 28 mm |
| Perforation: | frame 11½ |
| Mintage: | 800,000 |