28 foreign countries - 368 stamps, theme: Conquest of Space

Lot of 368 space exploration themed stamps from 28 nations, collected by a science fiction enthusiast. Some are new, others with a cancellation but not circulated.
The stamps are thus divided by country and number, sorted into 3 binders:
Ajman 31
Bulgaria 6
CCCP 23
Ceskoslovensko 8
Cuba 9
Dominica 2
Dubai 6
Fujeira 13
Grenada 2
Jordan 6
Liberia 18
Manama 22
Mayar 25
Mongolia 40
Panama 6
Paraguay 11
Ras Al Khaima 12
Republica de Guinea Equatorial 14
Republik Indonesia 2
Republique de Haute Volta 5
Republique d'Haiti 8
Republique du Tchad 6
Republique Togolaise 18
Romania 10
Rwanda 2
Sharjah 7
Umn al Quivain 31
Yemen 25