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Short desc: 125th Anniversary of Union of Czech Mathematicians and Physicists
Issuer: Czechoslovakia Date: 7/6/1987 Occasion: Union of Czech Mathematicians and Physicists founding Number/Year: 125 Consists of 3 stamps: (See stamps as list) 50h 50h 50h d=J. M. Petzval, C. Strouhal and V. Iarnik All are perf=11.25x12 |