English verge pocket watch in silver pair cases Circa 1778

Silver pair cased verge pocket watch
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An English verge pocket watch in silver pair cases circa 1778. Full plate fire gilt movement with square baluster pillars. Pierced and engraved cock, silver regulator disc. Plain three-arm steel balance, blue steel spiral hairspring. Later white enamel dial with Roman numerals, gilt hands. Pair cases with a monogram engraved on the inner, later pendant and bow, maker’s mark WB.
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Diameter: 49 mm
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Signed: Phillip Avenell Guildford