Mongoolia
Praegu kuvatakse: Mongoolia - postmargid (1924 - 2024) - 1 margid.
1978
Airmail - International Stamp Exhibition "PRAGA '78" - Prague, Czech Republic
5. september WM: mitte ükski lehe suurus: 1 perforatsioon: 12
![[Airmail - International Stamp Exhibition "PRAGA '78" - Prague, Czech Republic, Tüüp ]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Mongolia/Postage-stamps/1171-b.jpg)
