1930, Zeppelin Moscow Flight card and cover, franked respectively by 40k blue and 80k carmine (abrasion at the bottom), each one tied by Moscow ''10.IX.30'' special date stamp, each one with Friedrichshafen ''11.9.30'' arrival marking, mostly VF (Image)

1931, Airship over Red Square, 20k pale red, left sheet margin horizontal pair, left stamp with a stroke over ''?'' in ''kopeek'' variety (position 11), full OG, NH, VF (Image)

1931, Airship over the Arctic Region, 50k brown, unfolded block of four, bottom left stamp with a dot in ''o'' variety (position 44), full OG, NH, VF (Image)

1931, Airship over the Arctic Region, 50k dark gray blue, error of color, intact perforation and well centering, full OG, NH, VF, A. Farberov certificate (Image)

1934, Civil Aviation, imperforated trial color proof of 20k in violet, printed on watermarked paper Borders and Rosettes, enlarged margins, full OG, LH, VF (Image)

1934, Civil Aviation, imperforated trial color proof of 50k in ultra, left sheet margin single printed on watermarked Borders and Rosettes paper, fresh quality, full OG, VLH, VF (Image)

1934, Civil Aviation, forgery of 50k blue on paper without watermark, horizontal tete-beche pair, printed on gummed paper, VF, handstamp ''facsimile'' on reverse (Image)

1934, Airships, 5k-30k, complete set of five, absolutely perfect quality unit, full OG, NH, VF and scarce in such condition, C.v. 1,015 (Image)

1934, Airships, 5k-30k, complete set of five, all but 15k are sheet margin examples, stamp of 30k has several very slight toned spots on gum, otherwise a beautiful quality unit, full OG, NH, VF (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, nice centering, full OG, LH or previously hinged, VF, C.v. $1,032 (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, position 1 of 25-stamp setting, full OG, LH, VF, Soviet Philatelic guarantee hs, C.v. $725 (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, position 2 (no leg of ''p'' in ''Francisco''), used on registered flown cover from Moscow to Paris, tied by Moscow Post Office No.25 ''17.3.36'' ds, air mail label in black, address is partly obliterated, return address was cut off from the flap, no backstamp as often, mostly VF and scarce, Z. Mikulski certificate (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, small ''f'' variety of surcharge (position 7 of 25-stamp setting), nice and choice stamp, full OG, NH, VF, Soviet Philatelic guarantee hs, N. Mandrovski certificate, C.v. $2,250 (Image)

1937, Aviation Exhibition, 10k-1r, complete set of seven, unfolded blocks of four, beautiful quality unit, full OG, NH, VF (Image)

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

1937, Aviation Exhibition, 1r black brown and buff, three souvenir sheets of four, representing three different major varieties - hole in denomination, retouched stripe, shift of black color, all are fresh, full OG, NH, VF (Image)

1937, Aviation Exhibition, 1r black brown and buff, souvenir sheet of four, ten examples. nice and fresh condition overall, full OG, NH, VF, C.v. $4,500 (Image)

1939, Aviation Day, red, violet or blue overprints on Balloons and Airplanes stamps, 10k-1r, complete set of five, used on registered cover from Vladivostok to NYC, all appropriate markings and arrival ds, VF (Image)

SEMI-POSTAL, AIR POST AND BACK OF THE BOOK COLLECTION ON SCOTT PAGES: 1905-44, 160 mint stamps and one souvenir sheet, including all most valuable air post issues, such as No.C15-19, C26-29 (NH), C40-44, C45-49, C58-67, C75a (NH), as well as special delivery and postage due stamps, minor gum flaws should be expected, generally nice quality unit, full OG, LH or hinged, F/VF, C.v. $4,800 (Image)