1930, Zeppelin issue, 40k dark blue and 80k carmine, imperforated complete set of two, first one with top sheet margin, while the last one has left sheet margin, eye- catching quality unit, full OG (80k has 1mm in diameter spot of natural gum skip), NH, VF and scarce so nice, SC #0256-57 (Image)

1931, Airship over the Arctic Region, 50k black blue, error of color, nicely centered, full OG, LH, VF, SC #276 (Image)

1931-33, Ice-Breaker ''Malygin'', imperforated complete set of four, and Stratostat ''USSR 1'', complete set of three, full OG, previously hinged, VF, SC #286-89, 341-43 (Image)

1932, International Polar Year, 50k carmine and 1r green, the last has perforation 10½, complete set of two, perfect condition, full OG, NH, VF, SC #297-98A (Image)

1934, Civil Aviation, 5k-80k, complete set of five, printed on watermarked paper, stamp of 50k with printed blue spot at the bottom right due to defect of printer’s plate, full OG, previously hinged, VF, SC #355-59, var (Image)

1934, Airships, 5k-30k, complete set of five, fresh condition, full OG, NH (10k and 15k) or very light traces of hinge, the set appears completely NH, F/VF, SC #376-80 (Image)

1935, Chelyuskin Rescue, 1k-50k, complete set of ten, nice quality unit, full OG, very light traces of hinge marks, most of the stamps appear NH, VF, SC #392-401 (Image)

1935, Moscow – San Francisco Flight, red surcharge 1r on 10k dark brown, position 3 of 25-stamp setting, full OG, NH, VF, Soviet Philatelic guarantee hs, SC #420 (Image)

1935, Moscow – San Francisco Flight, red surcharge 1r on 10k dark brown, position 15 (broken ''5'' in ''1935''), used on registered Express Mail cover from Moscow to Berlin, tied by Moscow Post Office No.9 ''20.09.35'' ds, delivered within one day and postmarked on arrival ''21.9.35'', VF, expertized by Z. Mikulski (Image)

1935, Moscow – San Francisco Flight, red surcharge 1r on 10k dark brown, small ''f'' variety of surcharge, right sheet margin single from position 10 of 25-stamp setting, post office fresh quality, full OG, NH, VF and extremely rare positional piece, Soviet Philatelic guarantee hs, SC #420 Ka (Image)

1935, Moscow – San Francisco Flight, red surcharge 1r on 10k dark brown, small ''f'' variety of surcharge from position 7 of 25-stamp setting, full OG, LH, VF, Soviet Philatelic guarantee hs, SC #420 Ka (Image)

1937, Aviation Exhibition, 10k-1r, complete set of seven and souvenir sheet of four, all nice and post office fresh, full OG, NH, VF, SC #473-79, Block 3 (Image)

1937, Aviation Exhibition 1r black, brown and buff, souvenir sheet of four, upper right stamp with retouched stripe at the top, perfect condition, full OG, NH, VF, SC Block 3 Ka, C.v. 68,000? (Image)

1939, Aviation Day, blue overprint on Airplane 1r brown, ''OCCP'' variety of overprint, full OG, NH, VF and scarce, SC #605 var (Image)

1944, 10th Anniversary of the Stratosphere Disaster, P. Fedoseyenko, 1r dark blue, raster square variety, full OG, NH, VF, SC #790(2) (Image)

1944, red surcharge 1r on Nikolai Gastello 30k ultra, left sheet margin block of four, top right stamp without last ''a'' in ''?????????'' and broken ''l'' in ''ruble'' varieties (position 22 in very small part of the drawing), full OG, NH, VF and rare, SC #801, var (Image)

1955, North Pole – Moscow Flight, red overprint on 1r multicolored, complete unfolded sheet of 72 (12x6), stamp on position 30 with wide space between ''???'' and ''?????'', on position 31 with missing dash varieties, full OG, NH, VF and rare in complete sheet, SC #1755, III-Ka (Image)

1956, North Pole Station, 1r multicolored, two unfolded complete sheets of 72 (12x6) printed on yellowish and creamy paper, perfect condition, full OG, NH, VF, SC #1802, var, C.v. 21,600? (Image)

Soviet Space Autographs. 1964-65, two First Day Covers commemorating Space Flights of ''Voskhod-1'' and ''Voskhod-2'', bearing complete sets of three or two respectively, appropriate cancellations and signatures of Vladimir Komarov, Konstantin Feoktistov and Boris Yegorov on the first one, Pavel Belyayev and Alexey Leonov on the second one, perfect quality, VF, Mezhdunarodnaya Kniga certificate (Image)