English ruby cylinder in silver open face case Circa 1832

An English ruby cylinder in a silver open face case, hallmarked London, circa 1832. Full plate fire gilt movement with gilt dust cover. Fusee and chain, Harrison’s maintaining power. Pierced and engraved masked cock with diamond endstone. Pierced and engraved foot and plate for the silver regulator disc. Plain three arm gilt balance, blue steel spiral hairspring. Ruby cylinder, large brass escape wheel, pivots with endstones. White enamel dial with subsidiary seconds, Roman numerals, blue steel seconds hand and gilt hands. Plain silver open face case with ribbed middle, lateral steel stop lever, maker’s mark HV.
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Diameter: 46 mm
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Depth: 14 mm
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Signed: Walker Gloucester St.
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A good English example of this rare escapement.