| Issuer: United States
Date: 1991 (1991 sheets) Block 1 (10, 5 x 2) 1, 1: 29c d=Mariner 10 & Mercury (planet) 1, 2: 29c d=Venus & Mariner 2 1, 3: 29c d=Earth & Landsat 1, 4: 29c d=Moon & Lunar Orbiter 1, 5: 29c d=Viking orbiter & Mars 2, 1: 29c d=Jupiter & Pioneer 11 2, 2: 29c d=Saturn (1991) 2, 3: 29c d=Uranus (1991) 2, 4: 29c d=Neptune & Voyager 2 2, 5: 29c d=Pluto (1991) In collections: mint (Stan Shebs) |
External links: Colnect 95371-..tes_of_America Record of changes |
