Issued by Great Britain, this striking 10d commemorative celebrates the early CEPT (European Conference of Postal & Telecommunications Administrations) cooperation theme. The deep blue background highlights the classic portrait of Queen Elizabeth II alongside a stylized green map of Europe formed with interlocking symbols, representing continental unity. The bold CEPT emblem and clean typography give it strong mid-1960s modernist design appeal. A popular Europa/CEPT thematic issue collected worldwide for both royalty and Europe integration themes. Excellent addition for QEII, Europa, or communications-history collections.