Issued by France in 1958, this commemorative stamp celebrates the inauguration of the UNESCO Headquarters in Paris, a landmark of modern international architecture and cultural cooperation. The design, rendered in a striking red and black engraved style, showcases the distinctive Y-shaped main building alongside adjacent structures, emphasizing innovation in post-war design. This issue symbolizes UNESCO’s mission to promote education, science, and culture worldwide. Highly collectible, it appeals to enthusiasts of architecture, international organizations, and classic French engraved issues.