1937 The All-Union Pushkin Fair, Soviet Union USSR, Souvenir Sheet (Dot in 'O', Print Error) (Image)

1937 The All-Union Avion Fair, Soviet Union USSR, Souvenir Sheet (SHIFTED Black Background near the '???' , Print Error) (Image)

1946-47 Anniversary of Soviet Postage Stamp, Soviet Union USSR, Souvenir Sheet (Broken '0' in '30', Print Error) (Image)

1945 2nd Anniversary of the Victory at Stalingrad, Soviet Union USSR, Souvenir Sheet (SHIFTED Center, Thick 'A', Print Errors, CV $70) (Image)

1945 2nd Anniversary of the Victory at Stalingrad, Soviet Union USSR, Souvenir Sheet (Thick 'A', Print Error, CV $70) (Image)

1949 25th Anniversary of Death of V. Lenin, Soviet Union USSR, Souvenir Sheet (Zv. 1280, Type II, CV $500) (Image)

1949 70th Anniversary of the Birth of Stalin, Soviet Union USSR, Souvenir Sheet (Zv. 1395 a, 'C' with Bar, Print Error, Yellow Paper, CV $360) (Image)

1949 70th Anniversary of the Birth of Stalin, Soviet Union USSR, Souvenir Sheet (Zv. 1395, White Paper, CV $400) (Image)

1962 Scientific Drifting Station 'The Noth Pole', Soviet Union USSR, Souvenir Sheet ('Retouch', Print Error, MNH) (Image)

1964 XVIII Olympic Games in Tokyo Green, Soviet Union USSR, Souvenir Sheet (Zagorsky ??36I, CV $430, MNH) (Image)

1964 XVIII Olympic Games in Tokyo Green, Soviet Union USSR, Souvenir Sheet (Zagorsky ??36I, CV $430, MNH) (Image)

1955 The All-Union Agriculture Fair In Moscow, Soviet Union USSR (Full Sheet, CV $80, MNH) (Image)

1960 Airmail, Soviet Union USSR, Full Sheet (Full Set, MNH) (Image)

1937 The First Congress of Soviet Architects, Soviet Union USSR, Souvenir Sheet (First Day Cancellation, CV $80) (Image)

1964 XVIII Olympic Games in Tokyo Green, Soviet Union USSR, Souvenir Sheet ('Curved' Star, Print Error, Zagorsky ??37 II, Canceled) (Image)