USSR
Viser nu USSR - Post frimærker (1923 - 1991) - 1 frimærker.
1959
International Geophysical Co-operation
18. august VM: Ingen Arkstørrelse: 50 Design: I. Levin Perforeringer: 12 x 12¼
![[International Geophysical Co-operation, type BTR]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/BTR-s.jpg)
![[International Geophysical Co-operation, type BTS]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/BTS-s.jpg)
![[International Geophysical Co-operation, type BTT]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/BTT-s.jpg)
