Cosmonautics Day, 1981 - Sergei Korolev
6*15 k 1981
USSR
Acknowledged, but not listed by SG.
Sergei Korolev was the engineer who led the early Soviet space program.
Sergei Korolev was the engineer who led the early Soviet space program.
| Country: | USSR |
| Type: | Postal blocks |
| Series: | 20th Anniversary of First Manned Space Flight |
| Nominal: | 6*15 k |
| Year: | 1981 |
| Perforation: | comb 11½ x 12 |
20th Anniversary of First Manned Space Flight
 Cosmonautics Day, 1981 - Yuri Gagarin |  Cosmonautics Day, 1981 - Sergei Korolev |  Cosmonautics Day, 1981 - Monument "To the Stars" |  Cosmonautics Day, 1981 - Sculpture of Yuri Gagarin, 1967 2.3$ |