USSR
Viser nå: USSR - Postfrimerker (1923 - 1991) - 1 frimerker.
1965
The 20th International Congress of Pure and Applied Chemistry
15. June VM: Ingen Arkstørrelse: 25 Design: I. Levin Perforering: 11½
![[The 20th International Congress of Pure and Applied Chemistry, type CZF]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/CZF-s.jpg)
