Mongoolia
Praegu kuvatakse: Mongoolia - postmargid (1924 - 2024) - 1 margid.
1965
Organization of Socialist Countries' Postal Administrations Conference, Beijing
15. detsember WM: mitte ükski perforatsioon: 11½ x 12
![[Organization of Socialist Countries' Postal Administrations Conference, Beijing, Tüüp NB]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Mongolia/Postage-stamps/NB-s.jpg)
