1931 Graff Zeppelin and Icebreaker `Malygin`, Soviet Union USSR (Perf. 12.25) (Image)

1931 Graff Zeppelin and Icebreaker `Malygin`, Soviet Union USSR (Imperforated, Full Set) (Image)

1931 Definitive Issue, Soviet Union USSR (Image)

1931 Airship Constructing, Soviet Union USSR (Perforated) (Image)

1931 Airship Constructing, Soviet Union USSR (Imperforated, Full Set) (Image)

1932 The 15th Anniversary of the October Revolution, Soviet Union USSR (Image)

1932 Special Delivery Stamps, Soviet Union USSR (Full Set) (Image)

1932 The 10th Anniversary of International Help for Working Association `????`, Soviet Union USSR (Full Set) (Image)

1932 The 2nd International Polar Year, Airmail, Soviet Union USSR (Full Set) (Image)

1932 The 40th Anniversary of M. Gorky's Literary Activity, Soviet Union USSR (Full Set) (Image)

1932 The All-Union Philatelic Exhibition in Moscow, Soviet Union USSR (Full Set) (Image)

1932 Airship Constructing, Soviet Union USSR (Full Set) (Image)

1933 Red Banners Order, Soviet Union USSR (Full Set) (Image)

1933 Anniversary of the Death of Karl Marx, Soviet Union USSR (Full Set) (Image)

1933 Communist Party Leaders, Soviet Union USSR (Full Set) (Image)

1933 The Stratosphere Flight of 1933, Soviet Union USSR (Full Set) (Image)

1933 Anniversary of the 26 Baku Commisars Execution, Soviet Union USSR (Full Set) (Image)

1933 Peoples of the USSR, Soviet Union USSR (Full Set) (Image)

1934 The 10th Anniversary of Lenin's Death, Soviet Union USSR (Full Set) (Image)

1934 The 350th Anniversary of the Ivan Fedorovs Death, Soviet Union USSR (Full Set) (Image)

1934 The 350th Anniversary of the Ivan Fedorovs Death, Soviet Union USSR (Full Set) (Image)

1934 Communist Party Leaders, Soviet Union USSR (Full Set) (Image)

1934 The Airships of the USSR, Soviet Union USSR (Full Set) (Image)

1934 In Memory of the Dead Stratonauts, Soviet Union USSR (Full Set) (Image)

1934 The Birth Centenary of Mendeleyev, Soviet Union USSR (20K with Background, Full Set) (Image)