274th - 283th Corinphila Auction - Day 3

1926/27: 50 m. black & yellow-brown, a single example used on 1928 Bank of Mongolia cover to Harbin, Manchuria tied by 'JARGALANTO / MONGOLIA' datestamp (Nov 25) with repeated information strike alongside, KOBDO registration handstamp above. Reverse with China 1915 Postage Due 10 c. blue (Peking print), a marginal block of four tied by "Harbin" cds's. Some extraneous docketing on reverse but a scarce cover.