1927, red or black surcharges on Wheel of Truth stamps, 8k/50k-28k/5r, two complete sets of four, first and second issues, full OG, LH or previously hinged, VF (Image)

1932, black surcharge 10(k) on Map of Tannu Tuva 8k olive brown, light blue and dark red, three postal cancellations, including Kyzyl (black) and Moscow (red), some soiling and minor perf irregularities at the top, but no thins or tears, F/VF, rare and guaranteed genuine (Image)

1935, Map, Views of Yenisei River, Mounted Hunters, 1k- 50k, complete set of seven, four low triangle values are in tete-beche blocks of eight (for pleasant presentation), high values are in blocks of four, all are unfolded and post office fresh, full OG, NH, VF (Image)

1935, Wild Animals, 1k-5t, complete set of ten, including seven triangle stamps, blocks of four (triangles in tete-beche blocks), perfect condition, full OG, NH, VF (Image)

1935, Wild Animals, Fox, 10k brown lilac, left sheet margin tete-beche block of four triangle stamps, imperforated vertically on the left and between pairs, post office fresh, full OG, NH with usual centering (Image)

1935, Wild Animals, 1k-5t, complete set of ten, used on registered cover from Kyzyl to Netherlands, no backstamp, vertical fold did not affect the stamps, otherwise VF (Image)

1936, 15th Anniversary of the Republic issue, Athletic Competitions, 70k violet, left sheet margin imperforated single with light fold between stamp and selvage, nice condition, full OG, NH, VF and rare (Image)

1941, Animals and Scenes, 5k-30k, complete set of five, changed colors and modified design, full OG, NH, VF, C.v. $500 (Image)

Air Post stamps. 1934, Animals and Airplanes, 5k-2t, complete set of nine used on registered cover from Kyzyl to Netherlands, no backstamp, VF (Image)

Air Post stamps. 1934, Argali - Mountain Sheep, 25k deep purple, triangle stamp in tete-beche pair, imperforated between stamps, negligible soiling at the bottom, unused, no gum, F/VF, A. Farberov certificate (Image)

Air Post stamps. 1936, Airplane and Dirigible, 5k-3a, complete set of ten with two 25k stamps (perforation 14 and 11), nicely centered and post office fresh, full OG, NH, VF and scarce never hinged (Image)

Air Post stamps. 1936, Seaplane above Dragon, 1a bluish green, diamond stamp with blank label and margin at bottom right, watermark ''1'' on selvage, CTO with full OG, VF and scarce item (Image)