This classic Belgian definitive stamp features a finely engraved portrait of King Albert I, who ruled Belgium from 1909 to 1934. Issued in blue, the design presents the King in military uniform, symbolizing his leadership during World War I, when he became known as the "Soldier King." The stamp carries a 25 centimes denomination, printed with “BELGIQUE” and “BELGIE” to represent both French and Dutch, the nation’s two major languages.

Highly collectible, this issue belongs to the popular Albert I definitive series, admired for its detailed engraving and historical importance. It remains a favorite among philatelists focusing on Belgian monarchy themes and early 20th-century European issues.