1935, red surcharge 1r on 10k dark brown, horizontal position of watermark Borders and Rosettes, position 14 of 25-stamp setting, tiny natural paper inclusion at left, full OG, barest trace of hinge, VF, Soviet Philatelic guarantee and expert's pencil sign, Est. $900-$1,200 (Image)

1935, red surcharge 1r on 10k dark brown, unfolded block of four, positions 17- 18/22-23 of 25-stamp setting, excellent quality item, full OG, NH, VF, each stamp with Soviet Philatelic guarantee, N. Mandrovski certificate, Est. $6,000-$7,000 (Image)

1935, red surcharge 1r on 10k dark brown, small ''f'' variety of surcharge, position 10 of 25-stamp setting, full OG, barest trace of hinge, looks NH, VF, Soviet Philatelic guarantee on reverse, C.v. $1,500, Est. $600-$750 (Image)