Helderse Postzegelhandel : Margid müügiks - Bulgaaria
Praegu kuvatakse: Bulgaaria - postmargid (1879 - 2024) - 1 margid.
1936
The 4th Congress of Slavic Geography and Ethnography, Sofia
16. august WM: mitte ükski perforatsioon: 11½
![[The 4th Congress of Slavic Geography and Ethnography, Sofia, Tüüp FF]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Bulgaria/Postage-stamps/FF-s.jpg)
