1937 The All-Union Avion Fair, Soviet Union, USSR, Souvenir Sheet (Black Dot under '??' in '?????????`, Print Error) (Image)

1938 30k Sport, Soviet Union, USSR (Light Lines across the Image, Print Error, MNH) (Image)

1938-39 40k The 20th Anniversary of the Young Communist League, Soviet Union, USSR (Pale Printing, Print Error, MNH) (Image)

1939 20k The New Moscow, Soviet Union, USSR (Horizontal Lines across Image, Print Error) (Image)

1939 1r The New Moscow, Soviet Union, USSR (Blue Marks on the Stairs, Print Error) (Image)

1939-40 5r Definitive Issue, Soviet Union, USSR (White Spot on Jacket, Print Error, MNH) (Image)

1939-40 30k The USSR Pavilion in the New York World Fair, Soviet Union, USSR (Intense Printing of Red) (Image)

1939-40 30k The USSR Pavilion in the New York World Fair, Soviet Union, USSR, Pair (Insufficient Printing of Red) (Image)

1939-40 30k The USSR Pavilion in the New York World Fair, Soviet Union, USSR, Pair (Intense Printing of Red, MNH) (Image)

1939-40 50k The USSR Pavilion in the New York World Fair, Soviet Union, USSR (Blue Dot on the ?louds, Print Error, MNH) (Image)

1941 10k The Industrialization of the USSR, Soviet Union, USSR (Dot near 2nd 'C' in 'CCCP', Line across '?????', Print Error, MNH) (Image)

1940 10k The 20th Anniversary of Fall of Perekop, Soviet Union, USSR (Dark Dot, Print Error, MNH) (Image)

1942 20k The Great Fatherlands War, Soviet Union, USSR (White Spot on '?' in '?????', Print Error, MNH) (Image)

1943 1r Vitus Bering, Soviet Union, USSR (Small Spots on Mountain, Print Error, MNH) (Image)

1943 30k Tehran Conference, Soviet Union, USSR (Red Missed, Print Error, MNH) (Image)

1944 30k 100th Anniversary of the Birth of Repin, Soviet Union, USSR ('Sand on Background', Print Error, MNH) (Image)

1944 1r Rimski-Korsakov, Soviet Union, USSR (Long Lines across the Portrait, Print Error, Prerforated, MNH) (Image)

1944 1r Rimski-Korsakov, Soviet Union, USSR (Long Lines across the Image, Print Error, Imprerforated, MNH) (Image)

1944 3r Rimski-Korsakov, Soviet Union, USSR (Long Line across the Image, Print Error, MNH) (Image)

1944 30k Heroes of the Civil War, Soviet Union, USSR (Dark Spots on Left, Print Error, MNH) (Image)

1944 30k Heroes of the Civil War, Soviet Union, USSR (Dark Spot on Right, Print Error, MNH) (Image)

1944 50k 100th Anniversary of the Birth of Repin, Soviet Union, USSR (Line across the Image, Print Error, MNH) (Image)

1944 60k 100th Anniversary of the Birth of Repin, Soviet Union, USSR (Horizontal Line across the Image, Print Error, MNH) (Image)

1944 Red Army Raised the Blocade of Leningrad, Soviet Union, USSR, Souvenir Sheet (White Spot over 'P' in 'CCCP', Print Error, Type I, MNH) (Image)

1944 15k Awards of the USSR, Soviet Union, USSR (Red Spots, Print Error, Corner Margins, MNH) (Image)