This Japanese postage stamp, issued in 1955, commemorates Japan’s participation in UNESCO (United Nations Educational, Scientific and Cultural Organization). The bold green design features a minimalist depiction of Mount Fuji, Japan’s iconic symbol, with snow-capped peak in white contrast. The UNESCO emblem appears in the upper left, while the year “1955” is inscribed vertically in Japanese on the right. At the bottom, “ユネスコ” (UNESCO) is written in katakana script. This stamp is prized among collectors for its clean modernist style, cultural symbolism, and its connection to Japan’s postwar reintegration into the global community.