Issued by the United Kingdom in 1974, this 5½p stamp honors Owain Glyndŵr (c.1354–1416), the legendary Welsh leader and last native Prince of Wales. The design features a vivid medieval depiction of Glyndŵr in full armor, mounted on a horse adorned in heraldic red and gold, brandishing a sword in battle readiness. The Queen’s silhouette appears in gold at the upper left, symbolizing the official issue. This stamp is part of a historical series celebrating notable British figures. A prized collectible for philatelists interested in medieval history and Welsh heritage.