English verge with Masonic dial in silver pair cases circa 1801

Silver pair cased verge pocket watch
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An English verge with Masonic dial in silver pair cases circa 1801. Full plate fusee movement with round pillars. Pierced and engraved round cock, unusual gilt regulator on top plate adjusted by a square in the engraved plate. Plain three-arm steel balance. Convex white enamel dial, the central polychrome enamel scene with a checkerboard floor, all seeing eye, beehive and ark. The sun, moon and some of the tools picked out in gilt, gold arrow hands. Silver pair cases, silver pendant and bow, maker’s mark TC in a rectangle.
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Diameter 55 mm
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Signed: Richd Champion London