Issued by Poland in 1963, this dynamic 90-groszy commemorative celebrates the XIII European Men’s Basketball Championship held in Wrocław from 4–13 October. The design features stylized black silhouettes reaching for a purple basketball, with a red athletic figure symbolizing the spirit of competition. Its bold mid-century graphic style, created by designer T. Michaluk, reflects the modernist Polish school of poster art. A popular thematic item for sports, Olympics, and European Championship collectors, it stands out for its strong colours and event-specific inscription.