Bulgaria
Now showing: Bulgaria - Postage stamps (1879 - 2024) - 1 stamps.
1986
Conference on Cooperation and Security in Europe, Vienna
27. November WM: None Perforation: 12¾ x 13
![[Conference on Cooperation and Security in Europe, Vienna, type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/3520-b.jpg)