Buy Celestial bodies / Planets
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astronomy - Switzerland 2009 - 100 Rappen
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XLI. Congress of the International Astronautical Federation in Dresden 1990 - Germany / German Democratic Republic 1990 - 100 Pfennig
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25 years of manned spaceflight - Germany / German Democratic Republic 1986 - 70 Pfennig
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Successes of the Soviet Space - Germany / German Democratic Republic 1968 - 20 Pfennig