1937-47, four Pioneer Flight covers, including ''Roland Garros'' stamp on FFC from St. Dennis to Paris (C.v. $600), three stamps franking on cover from St. Pierre to Paris (1937), cover from St. Dennis to Madagascar (1938) and cover from Pointe Des Galets to France, occasional conveyance flaws, still F/VF (Image)

1922, red surcharge (type I) 1200m on Imperial Consular stamp of 10k violet on green and orange network, position 17 of 25-stamp setting, full OG, NH, VF, expertized by Dr. Jemtschoujin, V. Zagorsky certificate, C.v. $1,500 (Image)

1922, red surcharge (type II) 1200m on Imperial Consular stamp of 2.25r dark blue on green and orange network, position 18 of 25-stamp setting, full OG, NH, VF, expertized by Dr. Jemtschoujin, V. Zagorsky certificate, C.v. $2,200 (Image)

1924 (June 2), Pioneer Flight cover from Moscow to France, franked by ''Fokker F.III'' complete surcharged set of four, delivered on-line Moscow-Koenigsberg-Berlin, then by connecting flight from Berlin to Paris, violet boxed ''SAMOLETOM'' marking, tax exchange stamp is on reverse, Berlin ''4.6.24'' transit and Paris ''6.6.24'' arrival marking, VF, suggested retail $100-$120 (Image)

1930, Moscow Zeppelin Flight, 40k dark blue, 80k carmine, three complete sets, vertical pairs with perforation 12½ and singles with perforation 10½, all with full OG, NH, mostly VF, C.v. $790 (Image)

1931, Airship over the Arctic Region, 50k dark gray blue, error of color, nicely centered with intact perforation, full OG, NH, VF, C.v. $900 (Image)

1931, Zeppelin North Pole Flight, Ice-Breaker ''Malygin'', 30k-2r, imperforate complete set of four, full OG, NH, VF, C.v. $227 (Image)

1931, Zeppelin North Pole Flight, Ice-Breaker ''Malygin'', 30k dark violet, comb perforation 12x12½, ''Lamp'' variety, full OG with minor disturbance at top left, NH, valued as lightly hinged, VF (Image)

1932, International Polar Year, 50k carmine, perf 12¼, and 1r green, perf 10½, complete set of two, full OG, NH, VF, C.v. $225 (Image)

1933, Record Flight of Stratostat U.S.S.R., 5k, 10k and 20k, complete set of three, full OG, NH, VF, C.v. $463 (Image)

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

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, nice unit in every respect, full OG, NH, VF, C.v. $2,058 (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, right sheet margin single printed on paper with horizontal watermark Borders and Rosettes, position 5 of 25-stamp setting, full OG with minor inclusion at top right margin, NH, VF and very rare, P. Buchsbayew certificate, suggested retail is $2,500 (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, position 18 of 25-stamp setting, 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, right sheet margin single from the position 20 of 25-stamp setting, full Moscow Postal Station 50 ''3.8.35'' cancellation, VF and very scarce, just a few margined singles exist in used condition, suggested retail $750-$1,000 (Image)

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

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

Zeppelin Flight. 1932 (August 29 - September 1), 5th SAF postcard to Brazil, franked by three Airships adhesives, cancelled Moscow on August 22, Berlin transit and Friedrichshafen connection, violet flight cachet, Pernambuco ''1.IX.32'' arrival ds on reverse, VF, Sieger #171 (Image)

Zeppelin Flight. 1933 (May 29-30), Italy Direct and Return Flights mixed franking registered postcard from Tripoli to Germany, franked by Zeppelin stamp 3L brown and two Libyan Pittorica stamps, violet confirmation cachet, Friedrichshafen ''30.5.33'' special drop marking and Lorch ''2.6.33'' arrival ds, minor soiling at left, F/VF and scarce franking, Sieger #213A var, Sassone C.v. €650 fro 3L stamp on correspondence (Image)