A two-day marine chronometer, c.1830s, by Parkinson & Frodsham, London, the silvered dials with Roman hours, signed, Parkinson & Frodsham, Change Alley London 2898, in original brass-bound mahogany two-tiered case with later faux ivory inset panels, with key, 16.5cm high As noted in the catalogue description, the panels inset into the mahogany case are later replacements. The original ivory panels have been removed. The case in very good overall condition. The interior in good condition. When wound the movement does not start.