1924, black surcharge 10k on ''Fokker F.III'' 5r green, wide ''5'' variety, 3mm strip of skipped gum at bottom, otherwise large part of OG with minor usual waves, NH, VF, C.v. $2,250 (Image)

1924 (September 18), Pioneer Flight Moscow - Berlin registered cover franked by black surcharges 5k/3r- 20k/10r, complete set of four and a single of 10k/5r on reverse, boxed ''Mit Luftpost'' and ''Mit Luftpost Befordert. Bahnpostamt 4.'' markings, Berlin ''20.9.24'' arrival ds, mostly VF (Image)

1924 (October 10), First Flight Moscow - Tehran pre- printed cover, franked by two surcharged air post values, red flight cachet and ''Mit Luftpost'' markings, Tehran arrival is alongside, VF (Image)

1927 (September 1), Hague Air Post Congress, 10k and 15k in horizontal pairs used on FDC sent by connecting Pioneer Flight from Moscow to Berlin and then to Paris, arrival ''5.9.27'' is on reverse, right stamp of 10c with pre-printing paper fold, mostly VF and scarce addressed FDC (Image)

1930, Zeppelin issue, 40k dark blue and 80k carmine, imperforate complete set of two, nice margins all around, full OG, NH, VF, E. Diena certificate, C.v. $5,700 (Image)

1930 (September 10-11), Zeppelin Moscow Return Flight stationery card and cover, franked by Zeppelin stamps of 40k and 80k respectively along with other stamps, tied by special Zeppelin ''10.IX.30'' ds, two-line violet confirmation marking, each one with Friedrichshafen ''11.9.30'' receiver, mostly VF, Sieger #85Aa, Bb (Image)

1930, Zeppelin stamp of 80k carmine with retouched right ''8'' at the bottom, perforation 12½, used on Return Zeppelin Moscow Flight cover together with another air post stamp, tied by special Flight ''10-IX-30'' ds, two line confirmation cachet and Friedrichshafen ''11.9.30'' arrival marking, minor reversal imperfection, still VF (Image)

1931, Airship over the Kremlin, 20k deep carmine, top margin imperforate single with vertical position of watermark Borders and Rosettes, full OG, LH, VF and scarce watermark variety (Image)

1931, Airship over the Kremlin, 20k pale red, comb perforation 12¼x12, horizontal pair with color permeating due to porous paper, full OG, NH, VF (Image)

1931, Airship over the Arctic Region, 50k gray blue, error of color, left sheet margin single, full OG, NH, VF, C.v. $900 (Image)

1932, Airship over the Dnieper Dam, 15k gray black, engraved printing, perforation 12½, complete sheet of 40 (5x8), post office fresh quality, full OG. NH, VF, C.v. $480++ (Image)

1933 (August 5-8), 4th SAF registered cover from Leningrad to Brazil, franked by four stamps, including three Zeppelin adhesives, delivered by flight Leningrad - Berlin with connection ''29.7.33'' ds, two confirmation markings and Pernambuco ''8.VIII.33'' receiver, slight traces of mounts on reverse, still VF and scarce (Image)

1931, Ice-Breaker ''Malygin'', 30k dark violet, left sheet margin single, perforation L12½, imperforate at left, full OG, NH, VF and guaranteed genuine, Est. $300-$350 (Image)

1932 (August 26), Attempt of Flight Franz Josef Land to Arkhangelsk, card and cover franked by International Polar Year stamps of 50k and 1r respectively, both addressed to Vienna with Berlin transit postmarks, mostly VF, Est. $200-$250 (Image)

1932 (August 23-28), ''Round Flight'' Arkhangelsk - Franz Josef Land - Arkhangelsk illustrated postcard, franked by Polar Year 50k carmine, bearing entry Arkhangelsk ''23.8.32'' postmark, addressed to Moscow with receiver of August 30, VF, scarce and unusual, Est. $200-$300 (Image)

1934, Civil Aviation, 10k green, horizontal pair on paper without watermark, full OG, NH, VF and scarce in premium quality, C.v. $4,000, Est. $1,200-$1,500 (Image)

1934, the Stratosphere Disaster, 5k, 10k and 20k, complete set of three, perforation 11, and stamp of 5k with perforation 14, full OG, NH (set) or LH, VF, C.v. $430 (Image)

1934, Airships and Dirigibles, 5k-30k, complete set of five, full OG, NH, VF, C.v. $1,020 (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, nicely centered and post office fresh, full OG, NH, VF, C.v. $2,058 (Image)

1935 (December 19), registered air mail cover from Kharkov to Vienna, franked by three stamps, including Nikolai Kamanin stamp of 40k purple, arrival ds is on reverse, mostly VF (Image)

1930-35, 3 postcards (one with endorsement, two - unused), Ice Cruise by Ice-Breaker ''Krasin'' - two cards: view of Spitsbergen (Svalbarg) and aviator Babushkin takes off for reconnaissance, the last one – real photo postcard showing Aviators-Heroes of the Chelyuskin Rescue, mostly VF, Est. $150-$200 (Image)

1935, Flight Moscow - San Francisco, red surcharge 1r on 10k dark brown, position 23 of 25-stamp setting, full OG, NH, VF, Elliott guarantee hs, C.v. $1,275 (Image)

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

1938, North Pole, First and Second Trans-Atlantic and Far East Flights, 4 complete issues, the total is 14 stamps, full OG, NH, VF, C.v. $280 (Image)

1938, Balloons and Airplanes, 5k-1r, complete set of nine, full OG, NH, F/VF, C.v. $270 (Image)