USSR
Numbers of face value pink
| Country: | USSR |
| Type: | Postage stamps |
| Series: | Cosmonautics Day, 1963 |
| Nominal: | 10 k |
| Year: | 1963 |
| Size: | 52 x 19 mm |
| Perforation: | comb 12½ x 12 |
| Mintage: | 3,000,000 |
Cosmonautics Day, 1963
