Czechoslovakia - 1965 space research issue (#2912) | StampData

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1965 space research issue of Czechoslovakia

Short desc: 1965 space research

Issuer: Czechoslovakia
Date: 3/15/1965

Consists of 7 stamps: (See stamps as list)

20h d=Maximum Sun-spot Activity perf=11.75x11.25
30h d=Minimum Sun-spot Activity - Quiet Sun perf=11.75x11.25
60h d=Moon Exploration perf=11.75x11.25
1k
1.40k d=Artificial Satellite and Space Station perf=11.75x11.25
1.60k d=Exploration of Mars
2k d=Soviet Kosmos and U.S. Tiros Satellites perf=11.75x11.25

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