Rare English open faced verge watch in pair cases Circa 1750

Pair cased verge by Charles Cabrier
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A rare English silver pair cased verge watch, circa 1750. Gilt finished verge movement, chain fusée, finely pierced and engraved foliage decorated balance cock and foot. Silver dial centred by engraved foliage decoration, Roman numerals, blued steel beetle and poker hands, outer Arabic five minute divisions. Plain inner and outer cases. Case numbered and stamped with casemaker’s mark ‘NB’, dial signed, movement signed and numbered.
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Diameter: 54 mm
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Signed: Chas Cabrier London