USSR
Now showing: USSR - Postage stamps (1923 - 1991) - 1 stamps.
1966
International Scientific Congresses
28. January WM: None Sheetsize: 50 Design: V. Pimenov Perforation: 11½
![[International Scientific Congresses, type DCX]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/DCX-s.jpg)
![[International Scientific Congresses, type DCY]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/DCY-s.jpg)
![[International Scientific Congresses, type DCZ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/DCZ-s.jpg)