A mahogany marine chronometer, No.1319, by Parkinson & Frodsham, circa 1860, the silvered dial with seconds and up/down subsidiary dials, fusee spring detent movement with maintaining power, Airy's compensation balance and helical spring, the brass bowl gimbal-mounted in a mahogany three tier case with glass inset and brass casings, swing handles, the dial 8 cm diameter, the case 16 cm high, 15 cm wide, 15 cm deep