English gold half-quarter repeating chronometer Circa 1840

Gold repeating pocket chronometer by George Moore
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A very rare and very fine English 18 carat gold open faced half-quarter repeating pocket chronometer, Hallmarked London 1840. Full plate movement, spring detent escapement in the manner of Thomas Earnshaw, bimetallic large chronometer balance, gold screws, diamond endstone, engraved bridge, repeating the hours, quarter hours and half-quarters. White enamel dial with Roman hours and outer minute divisions, subsidiary seconds, fine steel fleur-de-lys hands. Plain case, case maker’s punch LC for Louis Comtesse, Soho, London. Case numbered, cuvette, dial and movement signed and numbered, case and movement with matching numbers.
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Diameter: 53 mm
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Weight: 151 g
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Signed: G. Moore 25 Percival Street London
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George Moore was listed from 1814 to 1894 and partner of Frodsham. The manufacturer of the fine gold case was Louis Comtesse, one of the best case makers of his time.