English hunting cased double sided chronometer Circa 1867

Gold double sided chronometer by Edward White
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A remarkable double sided English pocket chronometer with two time zones, circa 1861.
The case is 18 carat gold with engraved oak leaf pattern and a case maker’s punch mark “AN” (Adolph Nicole, entered 29 November 1854).  The dial is on the front side enamel with auxiliary seconds at 9 o’clock and at the reverse side engraved, it has a silvered chapter ring and a centered wheel with engraved signs of the zodiac. The movement is a 1/2 plate movement with a spring detent escapement and a gold screw compensation balance.
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Diameter: 50 mm
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Weight: 114 g
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Signed: Edward White, 20 Cockspur Street London
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Edward White worked at Dent’s, a renowned maker of chronometers, watches and clocks at 20 Cockspur Street; their work was reputed to be among the finest of its kind in London. The company won medals at the exhibitions in London in 1862, Dublin in 1865 and Paris in 1867.