A mahogany two-day marine chronometer, No. 205, James Sweetman Eiffe, London, circa 1840

3½-inch silvered dial with subsidiary seconds and up/down dials, signed Eiffe, 1 South Crescent, Bedford Square, London, No. 205, gold hands, fusee movement with maintaining power, Earnshaw's spring detent escapement with compensation balance and blued helical spring, the brass bowl gimbal mounted in a three tier brass-bound box with brass swing handles and vacant ivory plaque