1915, pre-printed (Neya Forest Dacha and Mill of P.G. Mikhalev – Kostroma Gub.) registered cover posted at Nizhny Novgorod to Kazan, franked by three WW I Postal Charity stamps, all appropriate markings and arrival ds, VF. The word ''Dacha'' originally meant a plot of land that was given by Emperor to service people, such pre-print is very scarce (Image)

1915, World War I Postal Charity issue, 1+1k – 10+1k, imperforated complete set of four on white paper, nice balanced margins all around, full OG, previously hinged, VF, C.v. $1,275 (Image)

1921, Volga Famine Relief issue, 2250r in various colors, complete set of nine, including green and red on thin paper, red on ''cotton'' paper, two types of brown and two blue stamps – one with watermark ''wavy lines'', all with full OG, NH or LH (green on thin paper), VF (Image)

1921, Famine Relief, black error surcharge 100r+r100 on ''Sword Breaking Chain'' 70k brown in horizontal strip of three, the variety is right stamp (position 6 from a sheet of 100), full OG, NH (error), VF (Image)

1921, Famine Relief, blue surcharge 100r+100r on ''Sword Breaking Chain'' 70k brown, two horizontal pairs, one has double (''kiss'') impression of surcharge, the other one with surcharge shift to the left on both stamps, full OG, LH or hinged, F/VF (Image)

1922, Philately for the Children, black overprint on 1k-10k, complete set of six, perforated 1k from position 8, imperforated 1k – position 25, both from the second setting, nice and fresh full OG, VLH, VF, both ''key'' stamps with guarantee hs on reverse, C.v. $790 (Image)

1922, Philately for the Children, black overprint on perforated 1k orange, position 9 of the second printing, short one tip of perforation at top, a fresh single, full OG, NH, VF, expertized by Dr. Jemtschoujin and others, C.v. $725 (Image)

1922, Philately for the Children, black overprint on imperforated 1k orange, position 9 of the second printing, full OG, LH, VF, Soviet Philatelic guarantee hs (Image)

1922, ''For Starving'', Postal Transports, Locomotive, no value indicated in gray blue, horizontal gutter block of eight (2x4), top left stamp with ''R.G.F.S.R.'' variety, full OG, NH, VF (Image)

1923, Philately for the Labor, gold, bronze or silver surcharges 1r+1r/10r – 4r+4r/5000r, complete set of six, including 2r+2r/250r on thin paper, nice quality, full OG, NH (three stamps, including silver surcharge) or VLH/LH (three stamps, including bronze surcharge), VF, the ''key'' stamp expertized by Dr. Jemtschoujin (Image)

1923, Philately for the Labor, variety – heavily overinked gold surcharge of 1r+1r on 10r brown and black, vertical pair with enlarged margin at foot, full OG, NH or LH (bottom stamp), VF (Image)

1923, Philately for the Labor, bronze surcharge 2r+2r on 250r violet, printed on ordinary paper, broken left leg of ''m'' in ''Maya'' variety (position 9), full OG, previously hinged, VF (Image)

1923, Philately for the Labor, bronze surcharge 2r+2r on 250r violet, printed on thin paper, deformed right leg of ''m'' in ''Trudyaschimsya'' and colon instead of dot at the end (position 23), full OG, NH, VF (Image)

1923, Philately for the Labor, inverted bronze surcharge 2r+2r on 250r violet, printed on ordinary paper, full OG, light trace of hinge mark, VF, C.v. $325 (Image)

1923, Philately for the Labor, bronze surcharge 4r+4r on 5000r violet, vertical pair, top stamp with double dash and double nose of ''1'' in ''1 Maya'' varieties, full OG, NH, VF (Image)

1922, Philately for the Labor, bronze surcharge 4r+4r on 5000r, bottom sheet margin single, basic stamp with a spectacular printing plate breakage resulting in part of the design replaced by large white spot with violet center, full OG, NH, VF and scarce (Image)

1923, Philately for the Labor, silver surcharge 4r+4r on 5000r violet, absolutely perfect quality single, full OG, NH, VF, guaranteed genuine, C.v. $1,800 (Image)

1923, Philately for the Labor, inverted silver surcharge 4r + 4r on 5000r violet, slight bottom left corner bend, nice quality single otherwise, full OG, NH, VF and rare, L. Hovest certificate, C.v. $45,000 (Image)

1929, Child Welfare, 20+2k olive black and light blue, perforation 10¾, right sheet margin single, imperforated on the right, nice and fresh, full OG, LH and fine (Image)

1929, Child Welfare, 20+2k olive black and light blue, perforation 10¾, bottom sheet margin single, imperforated at foot, fresh, unused, no gum and fine (Image)

1990, Zoo Relief Fund, top sheet margin imperforated se- tenant block of three with label, full OG, NH, VF and guaranteed genuine (Image)