1904-08, red diagonal overprint ''Kitai'' on 10k dark blue, printed on vertically laid paper, nice and very fresh, full OG, LH, VF and rare, expertized by A. Diena, A. Rosselevitch, P. Buchsbayew certificate (Image)

1917, inverted black surcharge $7 on 7r black and yellow, printed on vertically laid paper, fresh and flawless single, full OG, NH, VF and rare, reportedly only 25 stamps with inverted overprint were produced (Image)

COLLECTION ON PAGES: 1880-1920, about 100 mint and used stamps, starting with pre-philatelic Peking cancellation on Imperial 7k gray and rose of 1879, neatly arranged overprints ''Kitai'', later surcharges with nice range of Harbin issue, which included two inverted and one double surcharges, minor flaws possible, nice and fresh unit, full OG or used, F/VF, C.v. is over $1,700 (Image)