$4.75

APOLLO 16 APR 14,1972 PHILADELPHIA FRANKLIN INSTITUTE SPACE COVER NASA

$4

1970 VIKING Mars 'SPED' Supersonic Planetary Atmospheric Entry Test Wallops 9 Oc

$4

2023 Mars 'Ingenuity' Helicopter 39th Flight Pasadena 11 January

$3

SHUTTLE ATLANTIS STS-76 LANDING MAR 31,1996 APOLLO 15 BAZAAR SPACE COVER NASA

$4.75

PERSHING ROCKET LAUNCH DEC 29,1961 PAFB SWANSON SPACE COVER NASA

$4.75

GEMINI 3 MAR 24,1965 CAPE CANAVERAL EBERHARD COLLE SPACE COVER NASA

$4.99

Skylab 2 US Navy Recovery Force Cover Ship Cancel USS Ticonderoga 6-22-73

$4.5

SKYNET 2 BRITISH MILITARY SAT LAUNCH AUG 19,1970 CENTENNIAL SPACE COVER NASA

$4

2022 Mars 'Ingenuity' Helicopter Twenty-Third Flight Pasadena 24 March PC

$2.79

UNMANNED MARINER APR 4,1975 PASADENA CA ARTMASTER CACHET

$4.75

ARGO D-4 ROCKET FIRED JUN 26,1961 WALLOPS ISLAND SWANSON SPACE COVER NASA

$4.75

(ABRES) NIKE ZEUS TARGET JUN 26,1966 VAFB SWANSON SPACE COVER NASA