Mongolja
Muri Bhalissa: Mongolja - Bolol tal-posta (1924 - 2024) - 1 bolol.
1965
Organization of Socialist Countries' Postal Administrations Conference, Beijing
15. December WM: Xejn Perforazzjoni: 11½ x 12
![[Organization of Socialist Countries' Postal Administrations Conference, Beijing, Tip NB]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Mongolia/Postage-stamps/NB-s.jpg)
