USSR 1923 - 1940
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                                                        1923 - Airplane in flight. Not issued
                        
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                                                         1923 - Agricultural Exhibition in Moscow, perforated 12 and 1/2
                        
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                                                        1923- Agricultural Exhibition in Moscow, perforated 13 - 1/4
                        
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                                                        1923- Agricultural Exhibition in Moscow, not perforated
                        
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                                                        1923-25 Worker, Farmer and Soldier
                        
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                                                        1923-25  Worker, Farmer and Soldier, mixed series, different perforations
                        
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                                                        1924- Stamps of the series A10-A13, overprinted
                        
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                                                        1924- Death of Lenin
                        
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                                                        1924- Leningrad Flood - stamps of 1921, overprinted
                        
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                                                        1925- Worker, Farmer and Soldier
                        
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                                                        1925 - Effigy of N. Lenin
                        
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                                                        1925- Effigy of N. Lenin, not perforated
                        
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                                                        1925-  In Honor of A.S. Popov
                        
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                                                        1925 -  200th Anniversary of the Leningrad Academy of Sciences
                        
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                                                        1925,  Centenary of the Decembrist Revolt in 1825, not perforated
                        
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                                                        1925, Centenario della rivolta del Dicembre 1825 - D. 13 1/4
                        
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                                                        1925 - 20th Anniversary of the Russian Revolution of 1905
                        
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                                                        1925- Worker, Farmer and Soldier
                        
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                                                        1925 Anniversary of the Death of Lenin, not perforated
                        
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                                                        1925- Anniversary of the Death of Lenin, perf. 13-1/4
                        
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                                                        1926- Lenin, type of n.336-337 with modified design
                        
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                                                        1926-  6th World Esperanto Congress
                        
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                                                        1926 - For the Homeless Children - without watermark
                        
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                                                         1927- For the Homeless Children, new values
                        
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                                                         1927-Postage due stamp of 1925 with typographic overprint - without watermark - 1st type
                        
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                                                        1927 - Temporary. Stamps from 1923-25, overprinted
                        
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                                                         1927 - 40th Anniversary of the creation of Esperanto
                        
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                                                        1927 - 1st International Air Mail Congress in The Hague
                        
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                                                        1927 - 10th Anniversary of the October Revolution
                        
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                                                        1927 - Effigy. Worker, Farmer, Lenin
                        
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                                                        1927 - Stamps from 1925-1926 overprinted
                        
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                                                        1928 -  10th Anniversary of the Red Army
                        
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                                                         1928-1929 Effigy of Lenin. Type of 1925-26 F.A. - D. 10 1/2 or 10
                        
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                                                        1929 - Homeless Childhood
                        
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                                                        1929 - 1st Pioneer's Congress, perforation 12
                        
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                                                        1929-32 Various Effigies
                        
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                                                        1929-32 (1931-32) - Various Effigies, not perforated
                        
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                                                        1929 Industry Propaganda
                        
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                                                        1930 For the Homeless Children
                        
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                                                        1930 -  10th Anniversary of the Red Cavalry
                        
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                                                         1930 - Flight of the Graf Zeppelin Airship set of 2 stamps
                        
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                                                        1930 - 1st Pedagogical Exhibition of Leningrad
                        
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                                                        1930-32 - Public buildings
                        
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                                                        1930 - Flight of the Graf Zeppelin Airship, 2 values, not perforated
                        
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                                                        1930 - Flight of the Graf Zeppelin Airship, Perforated 12 1/4
                        
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                                                         1930 - Flight of the Graf Zeppelin Airship, Perforated 10 1/2 
                        
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                                                        1930 - 25th Anniversary of the 1905 Riot
                        
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                                                        1930 - 25th Anniversary of the 1905 Riot, not perforated
                        
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                                                        1931 -  Pro Airships construction 
                        
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                                                        1931 -  Pro  Airships construction, not perforated
                        
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                                                        1931 - Pro Airships construction, perforated 10 1/2 x 11 1/4 
                        
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                                                        1931 - Pro Airships construction, perforated 12-1/4
                        
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                                                        1931 - Pro Airships construction, perforated 13 3/4
                        
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                                                        1931 - The Graf Zeppelin Airship Expedition to the North Pole
                        
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                                                        1931 - The Graf Zeppelin Airship Expedition to the North Pole, not perforated
                        
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                                                         1932 - 2nd International Polar Year
                        
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                                                        1932 - Express stamps, various subject
                        
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                                                         1932-33 Maxim Gorki's Literary Anniversary
                        
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                                                         1932-33 - 15th Anniversary of the October Revolution
                        
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                                                        1932 -  10th Anniversary of the International Red Aid
                        
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                                                        1932 - Philatelic Exhibition Moscow. Museum of Fine Arts
                        
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                                                        1933 - Philatelic Exhibition, Leningrad
                        
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                                                        1933 - 50th Anniversary of Karl Marx's Death 
                        
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                                                        1933 - Ethnographic Conference
                        
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                                                        1933 - 10th and 15th Anniversary of three revolutionists
                        
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                                                         1933 - Ascension of Russian scientists into the Stratosphere aboard the Balloon "USSR"
                        
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                                                        1933 - 15th Anniversary of the order Red Flag
                        
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                                                        1933 - 15th Anniversary of the Death of 26 Red Baku commissioners
                        
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                                                        1934 - 10th Anniversary of Airmail Service
                        
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                                                        1934- Scott  524/8
                        
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                                                         1934 - 350th Death Anniversary of Ivan Fedorov
                        
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                                                        1934 - Scott 531/2
                        
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                                                        1934- Scott  536/9
                        
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                                                        1934 - Ascension of the Stratospheric Ballon Sirius
                        
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                                                        1934 - Airships
                        
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                                                        1934 - 10 years without Lenin
                        
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                                                        1935 - Anti War Propaganda 
                        
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                                                        1935 - Rescue of the survivors of the Chelyuskin icebreaker
                        
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                                                        1935 - Flight Moscow - San Francisco, A n.52 overprinted in red
                        
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                                                        1935 - Inauguration of the Moscow Metro
                        
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                                                         1935 - Spartakiad - Moscow
                        
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                                                        1935 - 40th Anniversary of the Death of F. Engels
                        
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                                                        1935 - 3rd International Congress of Iranian Art and Archaeology
                        
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                                                        1935 -  60th Anniversary of the Birth of President M. I. Kalinin
                        
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                                                        1935 - 25th Anniversary of the Death of Tolstoi, perforated 13 and 3/4
                        
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                                                         1935 - 25th Anniversary of the Death of Tolstoi, perforated 11
                        
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                                                        1936 - In memory of three revolutionists, perforated 11
                        
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                                                        1936 - In memory of three revolutionists, perforated 13 3/4 2K and 4K
                        
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                                                         1936 - In memory of three revolutionistsi, perforated 13 and 1/4
                        
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                                                        1936 - Pioneer Organization, perforated 13 1/4
                        
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                                                        1936 - 100th Anniversary of the Birth of N.A. Dobroliubov, perforated 11
                        
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                                                        1936 - 41 Various Effigies 
                        
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                                                        1937 - 100th Death Anniversary of A.S. Pushkin, coated paper
                        
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                                                        1937 - BF n.1, 100th Death Anniversary of A.S. Pushkin
                        
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                                                        1937 - 1st Congress of Soviet Architects
                        
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                                                        1937 - BF n.2, 1st Congress of Soviet Architects
                        
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                                                        1937 - BF n.3, Jubilee Exhibition of Soviet Aviation
                        
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                                                         1937 -  100th Death Anniversary of A.S. Pushkin, ordinary paper
                        
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                                                        1937 - 10th Death Anniversary of F.E. Dzerschinski
                        
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                                                        1937 -  Airplanes and views, colored paper
                        
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                                                        1938 - Schota Rustaweli
                        
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                                                        1938 - Russia participating at the International Exhibition in Paris
                        
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                                                        1938 -  Airship North Pole Expedition
                        
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                                                        1938 - 20th Anniversary of the Red Army
                        
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                                                        1938 - 1st Transpolar trip Moscow - Portland
                        
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                                                        1938 - 2nd Transpolar flight Moscow - Saint-Hyacinthe
                        
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                                                        1937-38 New Constitution of the U.S.S.R. - Coats of arms of the Republics
                        
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                                                         1938 - Papanin Polar Rescue Mission
                        
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                                                        1938 - Pro Youth
                        
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                                                        1938 - Tourism Propaganda
                        
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                                                        1938 - Inauguration of a new line of the Moscow metro
                        
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                                                        1938  - In honor of Soviet aviation
                        
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                                                        1938 - 20th Anniversary of the Communist Youth League (Komsomol)
                        
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                                                        1938 - Various types of Sports
                        
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                                                        1939 - Views of Moscow
                        
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                                                        1939 - Moscow-Far East women's air raid
                        
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                                                        1939 - Smelter Worker
                        
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                                                        1939 - Russian participation at the New York World's Fair , perforated 12 1/4
                        
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                                                        1939 - Russian participation at the New York World's Fair , not perforated 
                        
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                                                        1939 - 125° anniversario della nascita di Schewtschenko
                        
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                                                        1939 - Agricultural Fair 
                        
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                                                         1939 - Stamps from 1929-41 overprinted
                        
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                                                        1939 - Stamps from 1929-41 overprinted
                        
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                                                        1939 - Aviation Day, overprinted
                        
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                                                        1939 - 50th Death Anniversary of M.Y. Saltykov
                        
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                                                        1939-43 - Various Subjects
                        
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                                                         1939 - Effigy of Lenin
                        
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                                                        1939 - Health Resorts of the Caucasus
                        
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                                                        1939 - 50th Death Anniversary of N.G. Tschernyschewski 
                        
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                                                        1939 - 125th Anniversary of the Birth of M.J.Lermontov
                        
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                                                        1940 - 80th Anniversary of the Birth of A.P. Chekhov
                        
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                                                        1940 - In memory of the "Georgy Sedov" icebreaker
                        
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                                                        1940 - Annexation of Western Ukraine and Belarus
                        
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                                                        1940 - 100th Anniversary of the Birth of P. I. Tchaikovsky
                        
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                                                        1940 - Day 2 of Physical Culture
                        
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                                                        1940 - 10th Death Anniversary of V. Mayakovsky
                        
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                                                        1940 - Agricultural Fair in Moscow
                        
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                                                        1940 - 20th Anniversary of the Siege of Perekop
                        
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                                                        1940 - 20th Anniversary of the Siege of Perekop, not perforated
                        
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                                                        1940 - 20th Death Anniversary of Timiryazev