Auction 333-341 Nigeria, Cameroon, Sudan & Worldwide Postal History - Day 4

1924: 1 c. brown, grey on buff perf. 13½, 1926 "Postage" overprint in black on 1 c. blue, further example optd. in reddish-brown on 1 c. blue and November 1926 2 m., 5 m. (2) and 10 m. all used on 1927 registered cover tied by "ULAN BATOR / MONGOLIA" cds's (Aug 30). Three strikes of large "T" marking (two on reverse) and transit cds of Chita (Sept 8) and Manchouli (Sept 11) cds where China 1914 Postage Due 10 c. blue pair (Gi D346) applied and tied on reverse. File fold away from the adhesives, some overall aging but scarce.