POLAND 1980 Special Cancelled - KRAKÓW 1, 16.IV.1980
100th anniversary of the first trial against socialists.
Andrzej Myślicki, Katalog Polskich Stempli Okolicznościowych, Zeszyt 14, 1979 - 1981.
KAW RSW "Prasa-Książka-Ruch" Warszawa 1983.
Catalogue AM#80.043 Envelope
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