1956, air mail cover from Beijing to Czechoslovakia, franked by 14 stamps of four issues, including Engels complete set of two and seven Occupation definitives, no backstamp as always, F/VF, Est. $150-$200 (Image)

1969, Opera ''The Red Lantern'', multicolored test stamp with no value indicated, unfolded block of four, no gum as produced, NH, VF and scarce, Est. $200-$250 (Image)

1971-73, Albania, Physical Culture and Women's Day, three complete sets on ''N'' series, the total is 12 stamps, first set with corner sheet margins, full OG, NH, VF, C.v. $307, Est. $120-$150 (Image)

1973, Giant Panda, 4f-43f, complete set of six, full OG, NH, VF, C.v. $219, Est. $100-$130 (Image)

1978, National Science Conference, 8f x3 multicolored, souvenir sheet of three with simulated perforation, nice and fresh, no gum as issued, NH, VF, C.v. $500, Est. $250 -$300 (Image)

1978, Galloping Horses, $5 multicolored, souvenir sheet of one stamp, perfect condition, full OG, NH, VF, C.v. $550, Est. $250-$300 (Image)

1979, International Exhibition in Riccione, gold overprint on Great Wall souvenir sheet of $2 multicolored, flawless quality, full OG, NH, VF, C.v. $575, Est. $250-$300 (Image)

1979, Girl Studies Science, $2 multicolored, souvenir sheet of one stamp, appropriate size and post office fresh, full OG, NH, VF, C.v. $1,500, Est. $650-$900 (Image)

1979, International Philatelic Exhibition in Hong Kong, gold overprint on Camellias souvenir sheet of $2 multicolored, nice quality, full OG, NH, VF, C.v. $400, Est. $200-$250 (Image)

Northeast China. 1947, 10th Anniversary of the beginning Sino-Japanese War, $10-$100, imperforated souvenir sheet of four, no gum as issued, NH, VF, C.v. $475, Est. $200-$250 (Image)

Port Arthur and Dairen. 1949, surcharges in red or black on definitive issue of 1949, 7y/5y-100y/10y, complete set of four (other three surcharges of that set were prepared, but not issued), full OG, NH (two low values) or hinged, mostly VF, C.v. $675, Est. $350-$500 (Image)