This vivid 15-cent commemorative from Grenada celebrates the inauguration of the Universal Postal Union’s new headquarters in Bern, symbolizing global postal unity. The design features the classic UPU emblem—figures encircling the globe—set against a map-styled background. Surrounding vignettes depict the evolution of mail transport: stagecoach, sailing vessels, and early steam locomotive, with Queen Elizabeth II shown at left. A fine example of mid-20th-century Commonwealth thematic design, it appeals strongly to collectors of UPU, postal history, and transportation on stamps.