1937 The All-Union Pushkin Fair, Soviet Union USSR, Souvenir Sheet (Missed Dot after 'A', Print Error) (Image)

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

1937 The All-Union Pushkin Fair, Soviet Union USSR, Souvenir Sheet (Special Exhibition Postmark) (Image)

1937 The First Congress of Soviet Architects, Soviet Union USSR, Souvenir Sheet (SHIFTED Text, Print Error) (Image)

1944 Red Army Raised the Blocade of Leningrad, Soviet Union USSR, Souvenir Sheet (Type I) (Image)

1944 Red Army Raised the Blocade of Leningrad, Soviet Union USSR, Souvenir Sheet (Type III, MNH) (Image)

1947 800 Years of Moscow, Soviet Union USSR, Souvenir Sheet (Type I, MNH) (Image)

1947 800 Years of Moscow, Soviet Union USSR, Souvenir Sheet (Type II) (Image)

1947 October Revolution, Soviet Union USSR (DISPLACED Coat of Arms to the Left, Print Error, Souvenir Sheet, Type II, Canceled) (Image)

1949 70th Anniversary of the Birth of Stalin, Soviet Union USSR, Souvenir Sheet (Yellow Paper, Zv. 1395a, CV $330) (Image)

1949 25th Anniversary of Death of V. Lenin, Soviet Union USSR, Souvenir Sheet (Zv. 1279, Type II, Size 176x132mm, CV $1,250) (Image)

1949 25th Anniversary of Death of V. Lenin, Soviet Union USSR, Souvenir Sheet (Zv. 1280, Type I, Size 175x131mm, CV $500) (Image)

1955 50th Anniversary of the Death of K. Savitsky, Soviet Union USSR, Souvenir Sheet (Black Text) (Image)

1955 50th Anniversary of the Death of K. Savitsky, Soviet Union USSR, Souvenir Sheet (Yellow Brown Text) (Image)

1964 XVIII Olympic Games in Tokyo Green, Soviet Union USSR, Souvenir Sheet (Zagorsky ??36II, 'CURVED STAR', CV $1,150, MNH) (Image)

1964 XVIII Olympic Games in Tokyo Green, Soviet Union USSR, Souvenir Sheet (Zagorsky ??36II, 'CURVED STAR', CV $1,150, MNH) (Image)

1964 Space Exploration, Soviet Union USSR, Souvenir Sheet (Varnish, CV $40, MNH) (Image)