1924, Lenin Mourning issue, 3k-20k, imperforated and perforated complete sets of four, first one with wide frame in horizontal pairs, full OG, NH, mostly VF, Est. $100-$150 (Image)

1923-25, definitive issues, 1k-1r, imperforated set of 10, litho printing, 3k, 4k, 10k, imperforated stamps of typo printing on paper without watermark, 1k-5r, perforated complete set of 22 on watermarked paper, full OG, NH or LH (30%), VF, Est. $250-$300 (Image)

1924-25, definitive issue, worker 20k gray green, typo printing, top left corner sheet margin horizontal pair with a part of control inscription, invalidating perforation across the design, perfect quality, full OG, NH, VF and a spectacular item, Est. $500-$600 (Image)

1924-25, definitive issue, worker 2r green and rose, typo printing on thinned grayish paper, three-side margin block of ten (5x2) with double impression, double control lines at bottom selvage, two horizontal invalidating perforation lines across the design, full OG, NH, VF, Est. $600-$800 (Image)

1925, Lenin Mausoleum, 7k-40k, imperforated and perforated complete sets of four, full OG, NH (40k imperf, 7k, 14k and 40k perf) or VLH, F/VF, Est. $100-$150 (Image)

1925, Lenin Mausoleum, essay of unaccepted design for 40k in violet brown, printed on watermarked Borders and Rosettes paper, full OG, NH, VF, Est. $600-$800 (Image)

1925, definitive issue, soldier 3r dark brown and green, two stamps with perforation 12½ printed on watermarked Borders and Rosettes paper, types I and II, fresh quality, full OG, previously hinged, VF, Est. $300-$400 (Image)

1925, Aleksandr Popov, imperforated proof of 7k in red, printed on thick paper with text on reverse, used in 1949 on registered cover from Moscow to United Kingdom together with two other values (J. Barry's correspondence), British blue cross for registered mailing upon arrival, F/VF and rare, this lot has been sold for $325 plus appropriate commission on our Auction #91, unfortunately the customer refused to pay for it, Est. $300-$400 (Image)

1926, definitive issue, 7k-5r, imperforated complete set of eight on improved white wove paper, 7k-2r with sheet margins, full OG, NH, VF, SC #0120-27, Est. $100 -$150 (Image)

1927, Dr. Zamenhof, Creator of Esperanto, 14k bright green and brown, right sheet margin imperforated block of four with beautiful margins at three other sides, excellent quality, full OG, NH, VF and rare multiple, C.v. $5,500 as singles, Est. $4,000-$5,000 (Image)

1927, 10th Anniversary of the October Revolution, 5k brown, balanced margins imperforated single, full original redistributed gum on place of hinge, VF and scarce, A. Rosselevitch guarantee hs, C.v. $1,650, Est. $500-$600 (Image)

1929-31, the third definitive issue, 1k-80k and 1r-3r, complete set of 17 in blocks of four, including 1r deep blue on watermarked Lozenges paper, 30k with some gum adhesion, generally nice quality unit, full OG, NH (two stamps of 30k and 50k blocks are hinged), mainly VF, Est. $400-$600 (Image)

1932, Moscow Philatelic Exhibition, 15k black brown and 35k ultramarine, complete set of two with perforation 12½, in addition 35k with perforation 10½, the last one has very slight offset on reverse, all with full OG, NH, VF, C.v. $244.50, Est. $150-$200 (Image)

1932, Moscow Philatelic Exhibition, 15k x2 brown black and 35k x2 ultra, souvenir sheet of four stamps, printed on thin cardboard, size 168x119mm, fresh condition overall without hidden defects, we mention slightly rounded corners, no gum as produced, NH, VF and rare, only 500 sheets were printed, many of those were destroyed, Est. $7,500-$10,000 (Image)

1932, Moscow Philatelic Exhibition, 15k black brown and 35k ultra used on cover from Moscow to Leningrad, tied by special Exhibition postmark in red, arrival ds on reverse, VF, Est. $150-$200 (Image)

1933, Leningrad Philatelic Exhibition, red surcharges 30k on 15k black brown and 70k on 35k ultra, complete set of two, nicely centered and post office fresh, full OG, NH, VF, C.v. $507.50, Est. $300-$400 (Image)

1933, Baku Commissars, trial color perforated proof of 20k in brownish gray, printed on paper with watermark Borders and Rosettes, perforation L13¾, gummed, VF, Est. $750-$1,000 (Image)

1934, Ivan Fedorov, First Russian Printer, 20k carmine rose and 40k indigo, imperforated complete set of two, both with enlarged margins at right, full OG, NH or VLH (20k), VF, C.v. $1,675, Est. $800-$1,200 (Image)

1935, Mikhail Kalinin, 20k black brown, imperforated single with nice margins all around, large part of OG, VF, C.v. $1,500, Est. $500-$600 (Image)

1937, Alexander Pushkin, 10k orange brown, perforation 12 ¼x13¾, block of four, top right and bottom left stamps with a dot inside ''o'' in ''Pochta'' variety, Kiev CTO markings, NH with full OG, VF and scarce multiple even in used condition, Est. $150-$200 (Image)

1937, Alexander Pushkin, 20k blue green, perforation L13¾, unfolded block of four, full OG, NH or hinged (top stamps), VF, C.v. $360 as singles, Est. $150-$200 (Image)

1937, Alexander Pushkin, 40k rose lake, perforation L13¾, top left corner sheet margin unfolded block of four, full OG, NH, VF, C.v. $660 as singles, Est. $500-$600 (Image)

1937, Architectural Projects, 5k brown red, right sheet margin block of four, top left stamp with ''o'' over left ''5'' variety, full OG, NH, VF (Image)

1937, Architectural Projects, 40k violet, souvenir sheet of four, 5 examples, post office fresh quality with original protective sheets (enclosed), full OG, NH, VF, C.v. $275 (Image)

1937, 20th Anniversary of the Bolshevik Revolution in Russia, pre-printed souvenir envelope produced by International Historical Cover Committee (probably located in the US), bearing three commemorative stamps (5k Subway seems to be pre-cancelled) tied by Moscow ''7.11.37'' ds, VF and very unusual item, Est. $150-$200 (Image)