English silver and gilt metal pre hairspring verge Circa 1640

Oval silver and gilt metal verge 
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An English oval silver and gilt metal pre hairspring verge watch, circa 1640, gilt full plate movement signed John Cermoys, pierced and engraved balance cock, worm and wheel set-up.
Silver dial, Roman numerals, engraved centre depicting a man within a landscape, exterior with engraved floral decoration, the oval case with figures engraved to the covers, shell form keyhole cover, floral engraved band.
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Diameter: (length) 38 mm
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Signed: John Cermoys