Russian USSR
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Russian USSR 1977 Stamps Pieces on Chessboard Scott Michel Yvert 4352

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Russian USSR 1982 Stamps World Chess Championship Scott Michel Yvert 4940
Chess182
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Russian USSR 1982 Stamps World Chess Championship Scott Michel Yvert 4941
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Russian USSR 1982 Stamps World Chess Championship, overprint Scott Michel Yvert 4950

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Russian USSR 1991 Stamps 75th Ann.Birth of Paul Keres Scott Michel Yvert 5823

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