post stamps 125 years of the Union of Czech Mathematicians and Physicists czechoslovakia 1987

and or

1987-07-06

125 years of the Union of Czech Mathematicians and Physicists

perf. 11 1/4 : 11 3/4; design Josef Hamza

copies 13 280 000

copies 13 280 000

copies 13 280 000

* LC# - Katalog Pofis
Mi# - MICHEL Briefmarken Kataloge
Sc# - Scott Postage Stamp Catalog

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