The 13th Congress of the Bulgarian Philatelist Association - Sofia 1981
Viser nu Bulgarien - Post frimærker - 1981 - The 13th Congress of the Bulgarian Philatelist Association - Sofia - 1 frimærker.
1981
The 13th Congress of the Bulgarian Philatelist Association - Sofia
11. december VM: Ingen Perforeringer: 13
![[The 13th Congress of the Bulgarian Philatelist Association - Sofia, type ]](https://www.stampworld.com/media/catalogue/Bulgaria/Postage-stamps/3068-b.jpg)
