#2273-2278, C347 Hungary - Exploration of Mars (MNH)
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$2.10 USD
1974 Exploration of Mars, Set of 7. Designs: No. 2273, 40f, Spacecraft on Way to Mars. 60f, Mars 2 over Mars. 80f, Mariner 4. 1fo, Mars and Mt. Palomar Observatory. 1.20fo, Soft landing of Mars 3. 5fo, Mariner 9 with Mars satellites Phobos and Deimos. No. C347, Space Type of Regular Issue, 6fo, Mars "canals" and Giovanni V. Schiaparelli.