USSR
Stamp from souvenir sheet Mi:SU BL34y
| Country: | USSR |
| Type: | Postage stamps |
| Series: | Space Research |
| Nominal: | 10 k |
| Year: | 1964 |
| Material: | Chalk surfaced with a varnish coating |
| Size: | 31 x 42 mm |
| Perforation: | frame 11½ x 12 |
| Mintage: | 200,000 |
