1924 10k on 5r green, basic stamps wide "5", canceled Leningrad 14.5.27, v.f., cat. $700 (Cat No. C7a) (Image)

Cat. $700, Est.$250

1931 Air Ships imperforate, two sets used, v.f., cat. $305 (Cat No. C15-19) (Image)

Cat. $305, Est.$100

1931 50k gray blue (error), l.h., well centered with wide margins all around, v.f., cat. $500 (Cat No. C23a) (Image)

Cat. $500, Est.$250

1931 50k gray blue (error), n.h., perfectly centered with wide margins all around (unusual for this issue), v.f., cat. $900 (Cat No. C23a) (Image)

Cat. $900, Est.$500

1931 50k gray blue (error), bottom sheet margin single, hinged in margin, stamp n.h., v.f., cat. $900 (Cat No. C23a) (Image)

Cat. $900, Est.$500

1934 5k violet brown, perf. 13 3/4, n.h., v.f., cat. $275 (Cat No. C50a) (Image)

Cat. $275, Est.$150

1935 1r on 10k brown, red Moscow-San Francisco overprint, h.r., v.f., signed Goznak, cat. $725 (Cat No. C68) (Image)

Cat. $725, Est.$250

1935 1r on 10k brown, red Moscow-San Francisco overprint, l.h., v.f., pencil signed, cat. $725 (Cat No. C68) (Image)

Cat. $725, Est.$250

1935 1r on 10k brown, red Moscow-San Francisco overprint, lower case "f" in "San Francisco", l.h., v.f., signed Goznak, Diena, Brun, etc., cat. $1500 (Cat No. C68b) (Image)

Cat. $1500, Est.$250