1923, "Fokker F111", 5r green with wide "5" variety, right sheet margin single on thinner paper, full OG, tiny hinge trace like a small spot of gum loss, apparently NH, VF and extremely rare stamp of only 25examples possible, Raritan Stamps guarantee, C.v. $40,000, Est. $20,000-$25,000

1924-26, two registered covers franked by "Fokker F111" surcharged issues with additional franking, first one from Moscow to New York via Berlin, the other one from Kharkov to London via Moscow and Berlin, all appropriate markings and arrival ds, F/VF, each one with I. Kirzhner certificate, Est. $100-$150

75.00

1928 (May 15), Pioneer Flight registered cover from Moscow to Germany, franked by four stamps, including two of the Hague Air Post Conference 15k in horizontal pair, Berlin Luftpostamt boxed marking and "15.5.28"arrival ds, mostly VF, Est. $120-$150

75.00

1931, Airship Constructions, 10k-1r, complete set of five, all with perforation L12 1/2, full OG, NH, mainly VF, C.v. $300, Est. $200-$240

120.00

1931, Airship over the Arctic Region, 50k dark brown, comb perforation 10 1/2x12, right sheet margin single with double impression of the design, nice and post office fresh, full OG, NH, VF and very rare, only a handful of this rarity is known, this one is definitely the best preserved example, Est. $3,000-$4,000

1931, Airship over the Arctic Region, perforated (10 3/4) trial color proof of 50k in dark brownish violet on paper with horizontal watermark Borders and Rosettes, removed from a presentation card with text "Project" at the bottom, VF and extremely rare item. Only 48 imperforated proofs in brownish violet color were produced, perforated proofs of this stamp were not offered to the market, V. Zagorsky certificate, Est. $9,000-$12,000

1947 (April 20), two Airship over the Arctic 50k brown issued in 1931 used late on air mail cover from Moscow to Tbilisi, interesting numbered air post label is alongside, arrival "22.4.47" ds, mostly VF

75.00

1932, Airship over the Dnieper Dam, 15k gray black, engraved printing, perforation 10 1/2, very well centered with intact perforation, full OG, LH, VF and scarce stamp in sound condition, C.v. $2,000, Est. $1,000-$1,500

750.00

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. $150-$200

100.00

1932 (August 26), Attempt of Flight Franz Josef Land to Arkhangelsk, cover franked by International Polar Year stamps of 50k and 1r, complete set of two, addressed to Moscow with arrival ds on reverse, VF, Est. $150-$200

100.00

1932 (August 29), International Polar Year, 50k carmine (perf 12) and 1r green (perf 10 1/2), complete set of two used on registered air mail cover from Moscow to USA via Berlin, transit and arrival markings on reverse, VF and scarce complete set franking of non-Polar cover, Est. $250-$300

150.00

1933, "Stratostat USSR 1", 5k, 10k and 20k, three covers franked by these stamps, the first one sent from Moscow to Stalingrad, second one - locally sent in Moscow, the last one - from Baku to Kashira (Moscow Obl.), mainly VF, Est. $300-$400

200.00

1934, Civil Aviation, 80k purple, a single with perforation 10x13¾x13¾x13¾, printed on watermarked Borders and Rosettes paper, rough perforation at top as typical for these errors, neat Moscow CTO with full OG, VF and rare, N. Mandrovski certificate, Est. $1,500-$2,000

1934, the Stratosphere Disaster, 5k, 10k and 20k, used on individual covers together with other values, first one sent in Moscow, the other one - from Kiev to Moscow, the last one - from Moscow to Leningrad, all appropriate markings, mostly VF, Est. $300-$400

200.00

1935 (January 31-February 4), Airships, 5k-30k, complete set of five, used on registered air mail cover from Moscow to Boebling, all appropriate marking and arrival ds, mostly VF and rare, usually this set was used on Zeppelin postcard, Est. $600-$800

400.00

1935, Moscow-San Francisco Flight, red surcharge 1r on 10k dark brown, position 2 of 25-stamp setting, very well centered, full OG, LH, VF, Soviet Philatelic guarantee, L. Hovest certificate, C.v. $500, Est. $400-$500

250.00

1935, Moscow-San Francisco Flight, red surcharge 1r on 10k dark brown, position 25 of 25-stamp setting, full original slightly disturbed gum with very slight foxing, VF, Soviet Philatelic and several other guarantees, C.v. $500, Est. $400-$500

250.00

1938, 2nd Trans-Polar Flight, 20k gray black, imperforated single with enlarged margin at bottom and nice margins at other sides, typical gum wrinkles, full OG, NH, VF, C.v. $950, Est. $400-$500

250.00

1944, the Stratosphere Disaster, the second issue, four covers bearing 1r stamps of the issue, sent from Stalino (now Donetsk) to Moscow, from Moscow to Krasnodar and two by registered mail from different Field PO to Moscow, minor flaws, still F/VF, Est. $250-$300

150.00

1961, Helicopter over the Kremlin, black surcharge 6k on 60k ultramarine, horizontal pair, right stamp without "6" variety of surcharge (positions 19-20 of 80-stamp sheet), full OG, left stamp has somewhat gum foxing in places, right one (error) is completely all right, NH, VF and scarce error, which occurs in a small part of print run only, N. Mandrovski certificate, Est. $1,200-$1,500

750.00

     Colombia SCADTA Flight
1931, mixed franking registered postcard franked by two Soviet adhesives, delivered by Pioneer Flight on line "Leningrad-Berlin" (September 25 -26), tied by Leningrad special marking, bearing Berlin Luftpostamt cachet in red and transit date stamp, upon arrival to the East Coast of Colombia uprated by two stamps and posted on SCADTA Flight "Buenaventura- Cali" (boxed marking of October 20), VF, Est. $150-200

100.00

     North Pole Flights and Related Items
1938-61, 12 mainly illustrated covers, representing registered cover from Leningrad to NYC of 1938, cancellations of North Pole Stations No.7, 8 and 9, North Pole souvenir sheet on registered cover to Vienna and etc., fresh quality, VF, Est. $300-$400

200.00

     Balance of Soviet Union Flight Covers
1927-39, the Hague Air Post Conference on cover to Latvia, Attempt Flight Franz Josef Land to Arkhangelsk, cover from Kiev to Berlin franked by North Pole Flight issue and two high franking covers with Aviation Exhibition and other valuable stamps addressed to Sofia and Prague, appropriate markings, mostly F/VF, two with I. Kirzhner certificates, Est. $200-$300 (website photo)

150.00