1924 15k on 1r brown, surcharge inverted, l.h., v.f., signed Romeko, etc., cat. $1400 (Cat No. C8a) (Image)

Cat. $1400, Est.US$1,500

1930 Zeppelin 40k and 80k imperforate singles, n.h., v.f., signed Mikulski, etc., cat. $5700 (Cat No. C12b-13b) (Image)

Cat. $5700, Est.US$2,500

1930 80k carmine, horizontal pair used in 1937 with additional franking on registered cover from Moscow to Switzerland, 15k Foreign Exchange surcharge added on back, with Lugano arrival pmk, wax seal removed, fine and interesting commercial usage (Cat No. C13) (Image)

Est.US$250

1931 50k violet brown, imperforate trial color proof on gummed stamp paper, large margins all around, l.h., v.f., signed Kessler. A significant Soviet and Air Post rarity, only 24 (!) recorded, this one being position 18 (indicated in pencil), with "D" Postal Museum handstamp on back, 1997 Buchsbayew certificate (Sanabria 40) (Cat No. C18var) (Image)

Est.US$7,500

1935 Chelyuskin Expedition, 1k-50k complete, n.h. and post office fresh, each stamp well centered, fresh and v.f. A splendid set in superior quality, rarely offered this nice, cat. $2058 (Cat No. C58-67) (Image)

Cat. $2058, Est.US$1,000

1935 Moscow-San Francisco 1r on 10k Levanevsky, n.h., v.f., signed Goznak, etc., with Sorani certificate, cat. $1275 (Cat No. C68) (Image)

Cat. $1275, Est.US$500

1935 Moscow-San Francisco 1r on 10k Levanevsky, n.h., v.f., signed Goznak, etc., with Caffaz certificate, cat. $1275 (Cat No. C68) (Image)

Cat. $1275, Est.US$500

1935 1r on 10k dark brown, v.f., tied by 26.8.35 Moscow cds on registered Air Mail cover to Berlin, address portion excised, otherwise v.f., with arrival pmk (Cat No. C68) (Image)

Est.US$500

1922 1200m on 10k, Type III, n.h., v.f., signed Diena, Roig, etc., cat. $1500 (Cat No. CO5) (Image)

Cat. $1500, Est.US$750