1946, C.N.C. double black surcharge $100 on Hong Kong printing of $2 light brown, left sheet margin single on paper without watermark, unused, no gum, VF, Chan #A51a, SG #823a, C.v. £600 (Image)

1897, Empress Dowager, the Mollendorf issue, 9c bright green, right sheet margin block of four, printed on thick paper without watermark, imperforate horizontally between stamps, perfect quality item, full original streaky gum as always exists on that issue, NH, VF and extremely rare, only another block is known, Chan #28Ma, C.v. $50,000 as two pairs (2010), Est. $20,000-$25,000 (Image)

1898, black surcharge (large format) $1 on Red Revenue stamp, perfectly centered, full OG, previously hinged, VF and scarce in such condition, C.v. $5,000 (Image)

1915, First Peking Printing, Hall of Classics, $2 blue and black, center is inverted, bold colors, intact perforation with center line at left, full OG, very light trace of hinge, VF and extremely rare, no more then 30 examples survived, C.v. $175,000, Chan #245a, Est. $80,000-$100,000 (Image)

1923, Junks, Reaping Rice and Hall of Classics, the 2nd Peking issue, ½c-$20, complete set of 22, affixed over a page from souvenir album, unused, considered no gum, mostly VF, C.v. $2,216 (Image)

1923, Junk ½c black brown, the 2nd Peking printing, block of six (3x2) imperforated vertically, full OG with slight foxing, minor gum loss at left, otherwise NH, VF and very scarce, Chan #249d, Scott is not mentioned pair or strip imperf vertically, Est. $400-$500 (Image)

1921-29, President Chiang Kai-Shek 1c-$1, Sun Yat-sen Mausoleum 1c-$1 and Curtiss ''Jenny'', the first issue, 15c-90c, three complete sets affixed over three pages from a souvenir album, all are unused, considered to have no gum, mostly VF, C.v. $449 (Image)

1943, In Commemoration of Stamp Exhibition in Shanghai, three-language overprint on Industry and Agriculture imperforate souvenir sheet of six values, size 155x167mm, special cancellation, insignificant bend at right, still VF, C.v. $800 (Image)

1942, Dr. Sun Yat-sen, $50 blue, block of four imperforate horizontally and rouletted (6½) vertically, no gum as issued, VF, Chan #617b, SG #661a, £480 as singles (Image)

1945, Dr. Sun Yat-sen, $10 red brown, vertical pair with rough perforation 12½, imperforate between stamps, no gum as issued, NH, VF, Chan #621c, Est. $150-$200 (Image)

1943, Dr. Sun Yat-sen, $20 blue green, vertical pair with rough perforation 12½, imperforate between stamps, no gum as issued, NH, VF, Chan #622b, Est. $150-$200 (Image)

1946, black surcharge $2000 on Sun Yat-sen $5 carmine, perforation 12½, left sheet margin block of four, printed on horizontally laid paper, imperforate horizontally between stamps, no gum as issued, NH, VF, Chan #945 var, Est. $300-$400 (Image)

1949, Dah Tung prints, Gold Yuan unissued red surcharge $5000 on Revenue stamp of $100 olive green, nicely centered, no gum as issued, NH, VF, Chan #GN1, SG #1151A, C.v. £1,000 (Image)

1949, Hankow prints, Gold Yuan double black surcharge $500 on Revenue stamp of $10 gray green, minor soiling at left, no gum as issued, NH, VF, Chan #G119c, SG #1185a, £250 (Image)

Manchuria. 1927-29, black overprints on the 2nd Peking issue ½c-$5, red overprints on Chiang Kai-shek 1c-$1 and black overprints on Sun Yat-sen Mausoleum 1c-$1, three complete sets affixed over three pages from a souvenir album, all are unused, considered to have no gum, mostly VF, C.v. $713 (Image)

Sinkiang. 1921, 25th Anniversary of the National Post Office, black overprints on 1c-10c, complete set in blocks of four, three of which with marginal imprint, full OG, NH, VF, C.v. $395 as hinged single sets (Image)

Sinkiang. 1924-29, black or red overprints on the 2nd Peking issue ½c-$10, red overprints on Chiang Kai-shek 1c-$1 and black overprints on Sun Yat-sen Mausoleum 1c-$1, three complete sets affixed over three pages from a souvenir album, all are unused, considered to have no gum, mostly VF, C.v. $1,259 (Image)

Yunnan. 1926-29, black overprints on the 2nd Peking issue ½c-$5, red overprints on Chiang Kai-shek 1c-$1 and black overprints on Sun Yat-sen Mausoleum 1c-$1, three complete sets affixed over three pages from a souvenir album, all are unused, considered to have no gum, mostly VF, C.v. $596 (Image)