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Mongolia
蒙古

I.P.O. opened the first post office in Urga (Ulan Bator) on Jan. 14, 1910.


From Kulun (Urga) to Kalgan. Kulun Lunar Dater of Jan. 13, 1911?

On the back CIP 2c and 4c canceled by Kulun Lunar Dater on Jan. 13, 1911? Arrival Kalgan Lunar Dater of Jan. 23, 1911?


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