Sovjetunionen
Visar nu: Sovjetunionen - Postfrimärken (1923 - 1991) - 1 frimärken.
1987
Science in USSR
25. november WM: Inga storlek på arket: 50 Design: A. Kernosov Perforering: 11½
![[Science in USSR, Typ GYX]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/GYX-s.jpg)
![[Science in USSR, Typ GYY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/GYY-s.jpg)
![[Science in USSR, Typ GYZ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/GYZ-s.jpg)
