This distinctive stamp from Belgium features a bold and modern graphic design centered around “Operation Antenne,” a social initiative aimed at promoting communication and awareness. The stylized abstract motif, resembling both an antenna signal and an expressive face, reflects the theme of outreach and connection. Issued with a 13 Franc denomination, the stamp carries a strong visual identity typical of late 20th-century European design. The radiating line background adds depth and symbolizes the spread of information and support. A compelling piece for collectors interested in social campaigns, modern art styles, and Belgian semi-postal issues.