A striking EUROPA issue from Liechtenstein, this 50-rappen stamp features the iconic “Key of Europe” design—symbolizing cooperation among CEPT nations. Set against a vivid red background, the golden key’s head contains the letters C-E-P-T arranged around a central rosette, rendered with elegant geometric precision. Designed by Josef Schaedler and expertly printed by Courvoisier S.A., this issue is a favorite among EUROPA thematic collectors for its bold color contrasts and classic mid-century styling. A clean, well-centered example adds strong visual impact to any Europe/CEPT collection.