1921 10k on 4k carmine, double overprint, h.r., fine and rare stamp, signed Dr.P.Jemchouhin (twice) and Champion (Cat No. 51var) (Image)

Est.$750

1921 20k on 5r indigo, green and light blue, variety "top bar missing", h.r., slight overall gum toning, irregular perfs at bottom, fine and very rare stamp (with a stated printing of 15, only 1-2 of this variety can exist), signed Pappadopulo (Cat No. 62var) (Image)

Est.$2,000

1921 20k on 3k+4k semi-postal (1914 issue), block of four, h.r., lower left stamp showing doubling of surcharge, two stamps with small thins, otherwise fine-v.f., possibly the only known block of four of this value, signed Buchsbayew (Cat No. 64,64var) (Image)

Est.$2,500

1921 20k on 3.50r maroon & green, imperforate block of four, lower left stamp with inverted surcharge, h.r., with some adhesions and gum toning, handstamped markings on back, signed Pappadopulo, Buchsbayew, one of only 2-3 known (Cat No. 71,71var) (Image)

Est.$2,500

1921 20k on 7r dark green & pink, used imperforate horizontal pair, one stamp with inverted surcharge, inconsequential toning and small scissors cut between stamps, signed Pappadopulo. A rare tete-beche, one of only 2-3 known (Cat No. 72,72var) (Image)

Est.$2,500

1922 overprints, imperforate horizontal blocks of ten, disturbed gum, some staining, otherwise fine-v.f., cat. $1000 (Cat No. 78-81) (Image)

Cat. $1000, Est.$500