1932 15k gray black, engraved & unwatermarked, perforated 10 1/2 x 10 3/4, well centered for issue, small h.r., fresh and v.f., signed Buhler, with 2011 Buchsbayew certificate. A rare and undercatalogued stamp, cat. $2000 (Cat No. C25a) (Image)

Cat. $2000, Est.US$1,000

1935 Chelyuskin Expedition, complete set n.h., fine-v.f., cat. $2058 (Cat No. C58-67) (Image)

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

1935 Moscow-San Francisco 1r on 10k Levanevsky, lower case "f", unused, part original gum (some gum missing), well centered, fine, with 2015 Zagorsky certificate, cat. $1500 (Cat No. C68b) (Image)

Cat. $1500, Est.US$500

1922 1,200m on 10k, Type I, position 21, lower left sheet corner margin single, l.h., v.f., signed Goznak, Brun, etc. A rare positional piece, cat. $975 (Cat No. CO5) (Image)

Cat. $975, Est.US$1,000

1922 1,200m on 2.25r, surcharge type III, position 15, l.h. (if at all), v.f., signed Champion, cat. $1950 (Cat No. CO7) (Image)

Cat. $1950, Est.US$750

1922 1,200m on 2,25r, Type II, position 4, l.h., v.f., signed Goznak and Mikulski, cat. $1950 (Cat No. CO7) (Image)

Cat. $1950, Est.US$750