This elegant 60 groszy Polish stamp was issued in 1968 to commemorate the International Poster Biennale held in Warsaw — one of the world’s most renowned graphic design exhibitions. The minimalist design by Henryk Tomaszewski, a master of the Polish School of Poster Art, features a stylized white dove carrying a green clover, symbolizing peace and creativity. Above it, color swatches represent the artistic palette, emphasizing the unity of design and imagination. A classic piece merging philately and modern art, it reflects Poland’s leadership in poster design during the 20th century.