1924, ''Fokker 111'', black surcharge 10k on 5r green, left sheet margin horizontal pair, right stamp with narrow ''0'' variety of surcharge, full OG, NH or LH (error), VF (Image)

1927, International Air Post Conference, 10k dark blue and yellow brown, diagonal line through Scandinavian countries and European part of USSR variety, full OG, previously hinged, VF (Image)

1927, International Air Post Congress, 15k red and olive green, broken airplane right wing variety, full OG, previously hinged, F/VF (Image)

1930, Zeppelin issue, 40k dark blue and 80k carmine, perforation 12½ and 10½, six values representing different plate varieties, full OG, LH or previously hinged, mostly VF (Image)

1930, Zeppelin issue, 40k dark blue and 80k carmine, perforation 10½, complete set in blocks of four, bottom left stamp of 80k with broken frame at the bottom variety, full OG (slightly uneven on 40k), VF (Image)

1930, Zeppelin issue, 40k dark blue and 80k carmine, imperforated complete set of two, sheet margin singles, full OG, LH, VF, each stamp with Soviet Philatelic guarantee hs, C.v. $5,500 (Image)

1932, Airship over the Dnieper Dam, 15k gray black, engraved printing, imperforated lower left margin block of four, 3mm repaired tear at the bottom margin, stamp is not affected, a beautiful item in every respect, full OG, NH, VF and rare, two bottom stamps with J. Stolow handstamp, Raritan Stamps guarantee (2005) (Image)

1931, Ice-Breaker ''Malygin'', 30k-2r, comb perforation 12x12½, complete set in blocks of four, fresh and choice unit, full OG, NH or LH (one top stamp of 30k and 35k or both top stamps of other blocks), VF, P. Buchsbayew certificate (Image)

1934, Civil Aviation, trial color imperforated proof of 20k in lilac, top right corner margin single printed on watermarked paper, full OG, NH, VF (Image)

1934, Civil Aviation, 10k green, printed on paper without watermark, top right corner margin horizontal pair, imperforated between stamps, neat Moscow cancellations, VF, C.v. $1,800 (Image)

1934, Airships, 5k-30k, complete set of five, high value with slight soiling at the top right corner, fresh, full OG, LH or hinged, VF (Image)

1934, Airships, 5k-30k, complete set of five, the ''key'' value with slight gum wrinkle, otherwise full/large part of OG, LH or hinged, F/VF, C.v. $505 (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, nice and choice, full OG, LH or previously hinged, VF, C.v. $1,345 (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set in blocks of four, five of which with sheet margins, one stamp of 50k has tiny natural paper inclusion, post office fresh condition, blocks are really unfolded, full OG, NH (block of 50k has expertly removed hinge at the top), VF and rare set of multiples (Image)

1935, Chelyuskin Rescue, black-and-white real photo advertising, representing stamp design on front and details of issue on reverse, slightly rounded corners, mostly VF and scarce (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, position 2, perfect condition, full OG, very light trace of hinge, appears NH, VF (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, tied on a piece by appropriate Post Office No.50 date stamp, VF, several guarantees on reverse (Image)

1937, Aviation Exhibition, 20k gray green and gray black, left sheet margin single, imperforated on the left, minimal wrinkle on the right, neat corner cancellation, VF (Image)

1937, Aviation Exhibition, 50k dark violet and black, right sheet margin vertical pair imperforated between stamps, neatly cancelled, VF, C.v. $4,500 (Image)

1937, Airplane ''Maxim Gorki'', 80k violet blue and brown, lower right corner margin block of four, watermark ''1'' at the bottom, 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. $400 (Image)

1937, Aviation Exhibition, 1r black, brown and buff, souvenir sheet of four, full OG, LH, VF, C.v. $200 (Image)

1944, 10th Anniversary of the Stratosphere Disaster, nine items, including eight blocks of four and a single, representing different plate varieties, full OG, NH or LH (a single), VF (Image)

1948, Airplanes and Flag of Soviet Air Forces, 1r dark blue, perforation L12½, block of four, full OG, NH or LH (top stamps), VF (Image)

1949, Air Routes and Transport Airplanes, 1r black, ultra, gray and red, map of the USSR (gray color) strongly shifted to the top left, fresh, full OG, NH, VF and a spectacular item (Image)