Issued by the Republic of Vietnam (Việt Nam Cộng Hòa) in 1958, this 3 đồng Bưu Chính stamp marks the inauguration of UNESCO’s headquarters in Paris. The design, printed in a rich crimson hue, features the modern architectural façade of the UNESCO building alongside the organization’s emblem framed by a laurel wreath. The issue reflects Vietnam’s early post-war engagement in international cultural and educational cooperation. A fine example of mid-20th-century Vietnamese design blending national typography with global symbolism.