The 9th Organization of Socialist States Postal Ministers Congress, Ulan Bator 1973
Praegu kuvatakse: Mongoolia - postmargid - 1973 - The 9th Organization of Socialist States Postal Ministers Congress, Ulan Bator - 1 margid.
1973
The 9th Organization of Socialist States Postal Ministers Congress, Ulan Bator
15. juuli WM: mitte ükski perforatsioon: 11½ x 12
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