Gold Swiss open faced watch with enamel scene Circa 1780

Gold verge open-faced watch with enamel scene
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A yellow gold Swiss verge open-faced watch with enamel scene, circa 1780, gilt brass full plate verge movement with chain and fusee, cylindrical pillars, pierced and engraved balance bridge, plain gilt-brass three-arm balance, silver regulation disc.
White enamel dial, Arabic numerals, outer minute ring, gilt pierced hands.
18k Gold case, bezel decorated with blue and white floral-motif, the back panel surrounded by engine-turned frame with engraved star and bauble embellishments, the center with a polychrome painted enamel scene of a young girl in tears with an empty bird cage, pendant stamped FD
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Diameter 51 mm
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Signed: No Name