The Akio Seki Collection - British North Borneo - Labuk British North Borneo - 20 cents before 1924 (LaWe 674 / SS 20 / Pridm 41) - Obv. In the centre: value. Legend: Labuk British North Borneo / Rev. In two Chinese characters: Wu Fen: 50 cents (error) - copper 25.5 mm - Presentation piece: Proof. Plain edge. Very fine patina. Error in value in Chinese characters: Wu Fen = 50 cents instead of Erh Fen = 20 cents, UNC / R3: extremely rare