1935 native cover with pair of 15m and Chinese Postage Dues added on arrival in Kalgan, endorsed "via Vladivostok", fine (Image)

Est.US$150

1935 native cover franked with 2x15m brown, tied by violet Ulan Bator departure pmks, sent via Vladivostok to Kalgan, with 20c and 30c Chinese Postage Dues added on arrival (Image)

Est.US$150

1943 Issue, paper with network, complete set of eight, top value h.r., others n.h., occasional natural inclusions, fresh, fine-v.f., scarce, cat. $3595 (Cat No. 75-82) (Image)

Cat. $3595, Est.US$1,500

1943 Issue, paper with network, complete set of eight, used, 10m small thin, others fine-v.f., scarce, cat. $3528 (Cat No. 75-82) (Image)

Cat. $3528, Est.US$1,000

1953 Marshal Cholbalsan, 11 different, mostly used, last two unused (n.h.), some creases and minor perf. flaws, mostly fine-v.f., cat. $1780 (Cat No. 104-106,108-115) (Image)

Cat. $1780, Est.US$300

1910 two red- band covers, each with C.I.P. franking, Urga departure cancels in Chinese characters (K'Ulun), fine (Image)

Est.US$1,000

1912 selection of four native covers, each paying 6c with Chinese adhesives, 1c, 2c overprinted in black or red, tied by Urga departure pmks, various directional markings, slogans, mixed condition (Image)

Est.US$500

1916-22 selection of 13 red-band covers, each with Chinese franking, paying 6c-9c with a combination of 3c+6c Junks, Urga departure and Kalgan arrival pmks, various directional chops and other markings, fine-v.f. (Image)

Est.US$1,500