A fine and rare late 18th century mahogany two-day marine chronometer with Exhibition ProvenanceThomas Earnshaw, London, Number 247 The two-part case with sliding inset to the top lid opening to reveal a circular glazed aperture, set to the front with an ivory signature plaque, Earnshaw No 247, the lower section with inlaid brass lozenge escutcheon and folding side handles, on a moulded base. Internally, the case is set with a full-length hinge, a raised lip carrying the twin trunnions to support the gimbals and with sprung gimbal lock in the upper left-hand corner, the top right-hand corner carries a hole for the winding key (key no longer present). The 3.25-inch silvered dial signed Thos Earnshaw Invt et Fecit No 247 with Roman chapter ring and outer minute scale, a large subsidiary seconds dial between V-VII, three blued steel spade hands. The spotted full plate 60mm movement with four pillars and maintaining power to the chain fusee, free sprung blued steel helical balance spring (of ten turns and with outer terminal curves) with diamond endstone and jewelled Earnshaw escapement, cut and compensated bimetallic balance with wedge shaped weights and a pair of timing screws, sitting in a weighted, gimballed bowl with sprung dust cover to the winding square. Ticking. 17cms (6.5ins) high FootnotesExhibited 'Your Time', an exhibition by the Northern Section of the Antiquarian Horological Society at Prescot Museum, February-April 2008; Williamson Museum & Art Gallery, Birkenhead February-April 2008. Exhibit P13.
A fine and rare late 18th century mahogany two-day marine chronometer with Exhibition ProvenanceThomas Earnshaw, London, Number 247 The two-part case with sliding inset to the top lid opening to reveal a circular glazed aperture, set to the front with an ivory signature plaque, Earnshaw No 247, the lower section with inlaid brass lozenge escutcheon and folding side handles, on a moulded base. Internally, the case is set with a full-length hinge, a raised lip carrying the twin trunnions to support the gimbals and with sprung gimbal lock in the upper left-hand corner, the top right-hand corner carries a hole for the winding key (key no longer present). The 3.25-inch silvered dial signed Thos Earnshaw Invt et Fecit No 247 with Roman chapter ring and outer minute scale, a large subsidiary seconds dial between V-VII, three blued steel spade hands. The spotted full plate 60mm movement with four pillars and maintaining power to the chain fusee, free sprung blued steel helical balance spring (of ten turns and with outer terminal curves) with diamond endstone and jewelled Earnshaw escapement, cut and compensated bimetallic balance with wedge shaped weights and a pair of timing screws, sitting in a weighted, gimballed bowl with sprung dust cover to the winding square. Ticking. 17cms (6.5ins) high FootnotesExhibited 'Your Time', an exhibition by the Northern Section of the Antiquarian Horological Society at Prescot Museum, February-April 2008; Williamson Museum & Art Gallery, Birkenhead February-April 2008. Exhibit P13.
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
