Czechoslovakia 1978 Soviet-Czech Space Flight (opt'd) unmounted mint set of 2, SG 2387-88, Mi 2425-26
Czechoslovakia 1978 Soviet-Czech Space Flight (opt'd) unmounted mint set of 2, SG 2387-88, Mi 2425-26
Czechoslovakia 1978 Soviet-Czech Space Flight (opt'd) unmounted mint set of 2, SG 2387-88, Mi 2425-26