Early English gold pair cased verge pocket watch Circa 1720

Gold verge in pair cases by Thomas Tompion
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An early English gold pair cased verge watch, circa 1720. Full plate gilt finished verge movement, chain fusée, three armed balance, pierced and engraved balance cock, silvered regulator disc. Later white enamel dial with Roman numerals, outer minute track with Arabic five minute divisions, beetle and poker blued steel hands. Polished inner and outer cases. Movement signed and numbered, outer case with London date letter for 1720.
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Diameter: 53 mm
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Signed: Thomas Tompion London