This 2.50 zł Polish commemorative stamp was issued in 1958 for the XXVII Międzynarodowe Targi Poznańskie (27th Poznań International Fair), one of Eastern Europe’s oldest and most prominent trade exhibitions. The minimalist design features the fair’s emblem in red and black, with stylized modernist typography symbolizing postwar industrial progress and international cooperation. Issued during the People’s Republic era, it reflects Poland’s mid-century emphasis on commerce, innovation, and cultural exchange.