A George III and later silver cased keywind open-faced pocket watch, the gilt fusee movement with ve

A George III and later silver cased keywind open-faced pocket watch, the gilt fusee movement with verge escapement, the backplate signed 'Morris Tobias, Wapping, London No. 1551', the later replacement twin dial with skull and caduceus motif decoration, London 1796, case diameter 5cm (outer pair case lacking). Note: Morris Tobias (& Co) are recorded watchmakers working in Wapping between 1794 and 1840.