Prussia, Kingdom. A Military Long Service Decoration I Class Bar for 21 Years
(Militar Dienstauszeichnungen) Instituted 18 June 1825. A bar of gilded non-magnetic metal, bearing the cipher of Friedrich Wilhelm III (F. W. III.) on a pebbled background, affixed on a blue ribbon with yellow edges with a metal backer with horizontal pinback with a round wire catch, measuring 42.50 mm (w) x 39.14 mm (h), very fine.

