China Foreign Post Office Russian Post Office 1909 (20 July) red band

China Foreign Post Office Russian Post Office 1909 (20 July) red band envelope to Kalgan bearing, on the reverse, Kitai 7k. tied by a good strike of the type 6 c.d.s., Urga in Mongolia P.O. Abroad, with a second strike alongside, the address side with Kalgan type 3 arrival c.d.s. (26.7). Scarce. Less than ten covers known with Kitai overprint stamps.

Estimation:€568.2

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