THOMAS MERCER, A 20TH CENTURY TWO-DAY MARINE CHRONOMETER the silvered brass circular dial with Roman numerals, seconds and power reserve subsidiary dials fronting a two day chain driven fusee movement with compensated detent escapement and Harrison maintaining power. The Mahogany case with glazed viewing window and brass gimble, having original tipsy winding key.

Box measures 18.5cm wide, 17cm high