1922, Famine Relief yellow over red surcharge 250r+250r on ''Sword Breaking Chain'' 35k dark blue, basic stamp with thin ''o'' in ''Rossia'' variety (position 99), owner's handstamp on reverse with tiny facial spot at left margin, full OG, NH, VF, only one sheet of 100 stamps with double surcharge was produced, therefore offered stamp with thin ''o'' is unique without any doubts, Raritan Stamps opinion, Est. $3,250-$4,000 (Image)

1922, Philately for the Children, inverted (reading up) black overprint on 2k green, the first printing, position 6 of not inverted setting, full OG, NH, VF, expert's hs on reverse, C.v. $500, Est. $140-$180 (Image)

1922, Rostov-on-Don issue, 2t-6t, complete set of four, three of which with sheet margins, no gum as issued, VF, each one pencil signed (Image)

1922, Rostov-on-Don issue, 2t green, retouched design - hammer over sickle and new design of right peasant's feet (position 29), no gum as issued, VF, Est. $200-$250 (Image)

1923, Philately for the Labor, inverted bronze surcharge 1r+1r on 10r brown and black, excellent condition, minor bronze ink trace on margin, surcharge with ''1'' of ''1 Maya'' exactly over ''1'' of ''1923'', only 2 possible in 25- stamp setting (normally second line of surcharge shifted to the left), full OG, NH, VF and rare item, Raritan Stamps guarantee, Est. $1,200-$1,500 (Image)

1923, Philately for the Labor, red trial surcharge 1r+1r on 10r brown and black, full OG, previously hinged, VF, Soviet Philatelic guarantee (Image)

1924, Leningrad Flood issue, black surcharge 14k+30k on 300r green, top sheet margin single printed on thin paper, nice stamp in every respect, full OG, NH, VF, N. Mandrovski certificate, C.v. $1,150, Est. $500-$600 (Image)