1931-32, Airships, perforated 10k-1r used on six air post covers in various combinations, three addressed to Germany, two - to Czechoslovakia and one is advertising stationery envelope to Ulyanovsk, all appropriate markings, F/VF, Est. $200-$250 (Image)

RSFSR - SOVIET UNION MIXED FRANKING COVER: 1923 (December 3), cover from Novocherkassk (Don Obl) to Dresden, franked by three RSFSR definitives (two on reverse) and six Soviet Union values (all on reverse), all appropriate markings and Dresden ''12.23.12'' arrival marking, mostly VF, N. Mandrovski certificate, Est. $500- $600 (Image)

1924, definitive issue, 4k-40k, litho printing, perforation 14½x15, complete set of four, stamps of 4k and 10k with usual centering, full OG, NH, VF, C.v. $650, Est. $250-$300 (Image)

1925, definitive issue, 1k-1r, set of 16, typo printing, perforation 12, including 4k (VLH), 8k (hinged, A. Farberov certificate) and 1r used, full OG (9k - unused, no gum), seven stamps are NH, F/VF or better, Est. $600-$800 (Image)

1925, definitive issue, Lenin 5r brown red and 10r indigo, imperforated complete set of two in horizontal pairs, full OG, NH, VF, Est. $150-$200 (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)

1926, definitive issue, 1k-5r, imperforated complete set of 20 on watermarked Borders and Rosettes paper, all with sheet margins, full OG, NH, in addition 7k-5r, definitive set of eight on improved paper without watermark, full OG, NH/LH, both are VF, Est. $200-$300 (Image)

1933, Ethnographic issue, Tajiks, perforated (L11½) trial color proof of 15k in brown, phototype printing on watermarked Borders and Rosettes paper, size 47x22mm instead of 48.5x22.5mm for issued stamp, a part of ''P'' red overprint ''Proekt'', two translucent tips of perforation, fresh quality single removed from a presentation card and later gummed, F/VF and scarce, a common stamp is included, Raritan Stamps opinion, Est. $800-$1,000 (Image)

1935, the World Largest Diamond stamps, Moscow Spartacist Games, 1k-40k, complete set of ten arranged on large Mystic Stamps Co. Booklet, issued approximately shortly after the World War II, priced $2.50, slight folds did not affect the stamps, which with full OG, LH, VF and very scarce item, Est. $200-$300 (Image)

1936, Leo Tolstoy, 3k, 10k x2, 20k, all with perforation 14, used on registered cover from Tiflis to Moscow, addressed to Joseph Kaukhchishvili (former Head of the Caucasian Philatelic Bureau), oval violet postage due marking, Census advertising on reverse, arrival ds, mostly VF, Est. $200-$250 (Image)

1937, Alexander Pushkin, 10k yellow brown, two perforation errors - L13¾x12¼ top left corner margin single imperforated at top (used), L14 bottom margin single, imperforated at foot (full OG, NH), both are VF, Est. $150-$200 (Image)

1937, Alexander Pushkin, 40k lilac, left sheet margin horizontal pair with perforation L13¾, full OG, NH, VF, Est. $200-$250 (Image)

1937, Alexander Pushkin, 50k blue, top sheet margin single with perforation L12¼, imperforated at the top, neat Sevastopol cancellation, VF and very scarce error which is known in used condition only, Est. $300-$400 (Image)

1937, Felix Dzerzhinsky, 10k yellow brown, fresh single printed on ordinary paper, full OG, VLH, F/VF centering, Raritan Stamps guarantee, Est. $750-$1,000 (Image)

1937, definitive issue, farm worked 4k claret, printed on paper without watermark, nicely centered unfolded block of four, full OG, NH, VF, C.v. $500++, Est. $150-$200 (Image)

1936, definitive issue, Lenin 40k indigo, a single with enlarged margins at three sides, part of OG, VF, C.v. $375, Est. $150-$200 (Image)

1939, definitive issue, Lenin 3r dark green, right sheet margin single on paper without watermark, imperforated at right, neat postal cancellation on 1945, fresh and VF, Est. $200-$250 (Image)

1938, North Pole Flight, 40k dark green and carmine, 80k red and carmine, imperforated set of two in horizontal pairs, nice margins all around, full OG, LH, VF, C.v. $3,200, Est. $1,500-$2,000 (Image)

1946, definitive issue, aviator 30k blue, litho printing, full OG, previously hinged, F/VF, A. Farberov certificate, Est. $600-$800 (Image)

1947, definitive issue, three marginal unfolded blocks of four of offset printing, soldier 15k gray green and two of aviator 30k in gray blue and deep blue, all with comb perforation, centering is well above common, perfect quality, full OG, NH, VF, interesting and scarce group, Est. $600-$800 (Image)

1947, definitive issue, aviator 30k gray blue, offset printing, comb perforation, left sheet margin single with vertical perforation at left strongly shifted (8mm) to the margin and forming nice fantail, full OG, NH, VF, Est. $150 -$200 (Image)

1943, definitive issue, Coat of Arms 60k carmine red, side margin block of 20 (10x2), imperforated on the right, CTO with full OG (vertical fold and separation away from the error), VF, Est. $400-$500 (Image)

1940, Vladimir Mayakovsky, 60k dark gray blue, a single with comb perforation 12½x12 instead of L12½, raster horizontal diamonds, full OG, NH, VF, Est. $300-$400 (Image)

1944, Civil War Heroes, Nikolay Shchors 30k gray black, top margin single imperforated at top, Sergey Lazo 30k bright green, left margin single imperforated at left, both with neat cancellations, VF, Est. $150-$200 (Image)

1945, 2nd Anniversary of the Victory at Stalingrad, 3r black brown and orange red, souvenir sheet of four, orange red color significantly shifted to the bottom, full OG, NH, VF a common sheet in MNH condition is included, Est. $100-$150 (Image)