GREAT BRITAIN. Bronze Coronation Medal, 1831. William IV With Adelaide. NGC MS-66 Brown.BHM-1475; Eimer-1251. By W. Wyon, Obverse after F. Chantrey. Obverse: Bare head of William IV right; Reverse: Diademed bust of Adelaide right. Single finest certified at NGC. Sharply struck with nice even mahogany surfaces.