Mongolie
Montre maintenant: Mongolie - Timbres-Poste (1924 - 2024) - 1 Timbres-poste.
1965
Organization of Socialist Countries' Postal Administrations Conference, Beijing
15. décembre WM: Aucun Perforation: 11½ x 12
![[Organization of Socialist Countries' Postal Administrations Conference, Beijing, type NB]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Mongolia/Postage-stamps/NB-s.jpg)
