AN EIGHT-DAY MARINE CHRONOMETER signed James Muirehead & Son, makers to the admiralty, Glascow and numbered 3101, the gilt movement with spring detent escapement, bi-metallic balance with cylindrical weights and timing screws, free spring with blend helical spring, signed silvered dial with Roman chapters, subsidiary seconds and winding indicator, silvered and blend steel hands within a brass bowl, gimbal mounted within a glazed mahogany deck box