English silver keywind pair cased verge pocket watch Circa 1750

Silver pair cased pocket watch with leather outer case
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An English silver pair cased open faced keywind verge watch, circa 1750. Fire gilt full plate fusee verge movement, pierced and engraved balance cock, silver regulation, Egyptian pillars. Winding through the back.
White enamel dial with black Roman numerals, black outer minute track with Arabic numeral 5-minute markers, blued steel fancy hands. Polished inner case, outer leather with stud detailing. Signed movement
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Diameter: 48 mm
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Signed: Markwick Markham, London