1924, ''Fokker 111'', surcharged issue, 5k/3r, 10k/5r and 20k/10r, three values with a part of perfin ''Obrazets'', full OG, LH, VF, SC #59-60, 62 (Image)

1924, ''Fokker 111'', black surcharge 10k on 5r green, wide ''5'' variety, minor usual gum waves, full OG, VLH, VF, Soviet Philatelic guarantee hs, SC #60 II (Image)

1927, International Air Post Conference, 10k and 15k, complete set of two, each stamp with part of perfin ''Obrazets'', perforation cuts by scissors, full OG, VLH, F/VF and scarce, SC #185-86 (Image)

1930, Zeppelin issue, 40k dark blue and 80k carmine, imperforated complete set of two, both are bottom sheet margin examples, full OG (slightly uneven on 40k value), NH, VF and scarce, SC #0256-57 (Image)

1931, Airship over the Dnieper Dam, 15k gray blue, litho printing, perforation L12½, right sheet margin block of four with double vertical perforation between stamps, fresh, full original slightly dried gum, NH or LH, VF and scarce, SC #272 Pa (Image)

1932, Airship over the Dnieper Dam, imperforated lithographed proof of engraved stamp of 15k in blue, balanced margins, neat postal cancellation at the top, rather fresh, VF and extremely rare, this proof is close by color, but has completely different shading and lettering of stamp issued in 1931, SC #301 (Image)

1932, International Polar Year, 50k carmine and 1r olive green, complete set of two with perforation 12½, in addition stamp of 1r with perforation 10½, full OG, very light traces of hinge, VF, SC #297-98, 298A (Image)

1934, Civil Aviation, 50k black blue, top left corner sheet margin single printed on paper without watermark, full OG, NH, VF, a gorgeous single, SC #353 (Image)

1934, Ilya Usyskin, 5k brown violet, perforation L14, left sheet margin single, full OG, NH (trace of hinge on margin), VF, SC #373A (Image)

1935, Moscow - San Francisco Flight, red surcharge 1r on 10k dark brown, vertical pair, top stamp with small ''f'' variety of surcharge, positions 9/14 of 25-stamp setting, perfect condition, full OG, NH, VF and scarce se-tenant pair, SC #420 Ka/420, 900,000? (Image)

1949, Air Routes and Transport Airplanes, 1r black, ultra, gray and red, map of the USSR (gray color) shifted to the top left for 3mm, fresh, full OG, previously hinged, VF, SC #1369 var (Image)