Mongoolia
Praegu kuvatakse: Mongoolia - postmargid (1924 - 2024) - 1 margid.
1973
The 9th Organization of Socialist States Postal Ministers Congress, Ulan Bator
15. juuli WM: mitte ükski perforatsioon: 11½ x 12
![[The 9th Organization of Socialist States Postal Ministers Congress, Ulan Bator, Tüüp ABG]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Mongolia/Postage-stamps/ABG-s.jpg)
