World stamps
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Stamps Category Astrofilatelia
Guinea 1972: Heroes of space: Gagarin and deceased astronauts
Juana Olmos
Guinea 1972: Heroes of space: Paul VI and Soyuz 11
Juana Olmos
Guinea 1974: 5th Copernicus Centenary: Skylab
Juana Olmos
Guinea 1974: 5th Copernicus Centenary: Apollo Soyuz
Juana Olmos