Now showing: Bulgaria - Postage stamps (1970 - 1979) - 6 stamps.
5. August WM: None
![[The 100th Anniversary of the Universal Postal Union (UPU), type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/2364-b.jpg)
29. October WM: None Perforation: 13 x 13¼
![[Conference on Security and Cooperation in Europe, type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/2376-b.jpg)
30. December WM: None Perforation: 13
![[International Stamp Exhibition PHILASERDICA '79. The 100th Anniversary of Bulgarian Stamps - Stamps on Stamps, type ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/2756-b.jpg)
Now showing: Bulgaria - Postage stamps (1970 - 1979) - 6 stamps.
5. August WM: None
29. October WM: None Perforation: 13 x 13¼
30. December WM: None Perforation: 13