1922, red Airplane overprint on 45r black and green, two stamps, first one with overprint significantly shifted to the bottom, the other one on creamy paper, full OG, NH (shift) or VLH, VF (Image)

PIONEER FLIGHT COVER: 1923, large size registered cover from Moscow to Leipzig, flown on line Moscow - Koenigsberg - Berlin, franked by 48 RSFSR adhesives in singles and multiples, tied by Moscow ''10.3.23'' ds, violet marking ''Mit Luftpost'' on front and Leipzig ''14.3.23'' receiver on reverse, F/VF (Image)

1924, Fokker F-111, black surcharge 10k on 5r green, wide ''5'' variety, fresh quality, full OG, LH, VF, C.v. $1,250 (Image)

1924, Fokker F-111, black surcharge (somewhat doubled) 10r on 5r green, wide ''5'' variety, a part of Moscow date stamp, fresh, VF (Image)

1924, Fokker F-111, inverted black surcharge 15k on 1r brown, full OG, LH, VF, C.v. $1,400 (Image)

1930, Moscow Zeppelin issue, 40k dark blue and 80k carmine, corner sheet margin imperforated complete set of two, a gorgeous unit, full OG, NH, VF, each stamp with Soviet Philatelic guarantee hs (Image)

1931, Airship over the Arctic Region, 50k dark gray blue, error of color, unfolded block of four in immaculate quality, very well centering, full OG, NH, VF and rare multiple in nice condition (Image)

1931, Airship over the Arctic Region, 50k dark gray blue, error of color, perfect centering and perforation, full OG, VLH, VF, C.v. $500 (Image)

1931, Airship over the Arctic Region, 50k dark gray blue, error of color, full OG, LH, mostly VF, C.v. $500 (Image)

1933, Stratostat ''CCCP 1'', 5k ultra, horizontal pair imperforated between stamps, nicely centered with intact perforation, full OG, NH, VF and scarce, C.v. $17,500 (Image)

1934, Civil Aviation, imperforated trial color proof of 20k in light brown, printed on watermarked paper, nice margins, full OG, previously hinged, VF (Image)

1934, Civil Aviation, 5k-80k, complete set of five, printed on paper without watermark, nicely centered, full OG, NH, VF (Image)

1933, the Stratosphere Disaster, 5k-20k, complete set of three, representing pairs of 5k and 20k and two singles of 10k, all with full OG, NH or LH (one stamp of 10k), VF (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, excellent centering of all values, full OG, NH (slight 10mm gum wave on 50k stamp), VF and rare in such premium quality, (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, nice quality, full OG, NH or VLH (30k), VF (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, position 11 of 25-stamp setting, nicely centered and very fresh, full OG, NH, VF, Soviet Philatelic guarantee on reverse, C.v. $1,275 (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, position 5, full OG, LH, VF, C.v. $725 (Image)

August 3, 1935, postcard of attempted Non-Stop Flight from Moscow to San Francisco via North Pole, franked by red surcharge 1r on 10k dark brown, stamp from position 16, tied by Moscow 3.8.35 date stamp, addressed to Soviet Consul General at San Francisco, all appropriate markings and September 21, 1935 receiver, VF and very scarce (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, small ''f'' variety of surcharge (position 9), full OG, LH, VF, pencil expert's sign and Soviet Philatelic guarantee hs, C.v. $1,500 (Image)

1937, North Pole and Trans-Polar Flight, two real-photo postcards, honoring heroes participated in organization and carrying out of North Pole-1 Expedition (no output data on reverse), and Moscow-USA Trans-Polar Flight participants, second card has slightly rounded corners, still VF (Image)

1937, Aviation Exhibition, 10k-1r, complete set of seven and 1r black and red brown, souvenir sheet of four, choice unit, full OG, NH, mostly VF, C.v. $795 (Image)

1937, Aviation Exhibition, 1r black, red brown and buff, souvenir sheet of four, post office fresh quality, full OG, NH, VF, C.v. $450 (Image)

1944, 10th Anniversary of the Stratosphere Disaster, Pavel Fedoseyenko, 1r deep blue, raster square, top sheet margin single, full OG, NH, VF (Image)

1948, Airplanes and Flag of Air Forces, 1r dark blue, perforation L12½, three-side margin block of 50, folded along vertical perforation, full OG, NH, VF (Image)

1949, Air Routes and Transport Airplanes over various places in the Soviet Union, 50k-3r, complete set of eight, blocks of four, minor usual gum waves, block of large 1r stamp is lightly folded along vertical perforation, fresh quality overall, full OG, NH, VF (Image)