A MAHOGANY TWO DAY MARINE CHRONOMETER, NO. 590, JOHN BRUNTON, 17 UPPER EAST SMITHFIELD, CIRCA 1870

11.5cm silvered dial with subsidiary seconds and up/down dials, fusee movement with Earnshaw's spring detent escapement with compensation balance and helical spring, the brass bowl gimbal-mounted in a brass bound three tier case, brass swing handles



case 17.5cm square