USSR
Now showing: USSR - Postage stamps (1923 - 1991) - 1 stamps.
1984
The 27th International Geological Congress
20. červenec WM: Žádný Sheetsize: 50 Design: E. Egorov Perforation: 11½
![[The 27th International Geological Congress, type GKS]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/GKS-s.jpg)
