This classic Spanish definitive stamp features King Alfonso XIII, one of the most recognizable monarch portraits used in early 20th-century Spanish postal issues. Issued during the long-running Alfonso XIII definitive series (early 1920s), the stamp displays detailed engraved workmanship typical of European typography printing of the era. The deep violet shade and framed medallion portrait reflect Spain’s royal postal identity before major political transitions of the 1930s. Widely used for everyday correspondence, well-centered and clean examples remain desirable among monarchy and classic Europe collectors. A strong representative piece for Spanish royal or definitive collections.