Rare French silver open faced verge pocket watch Circa 1690

A very rare silver verge pocket watch
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A French original brass/silver case, signed verge movement with very steep fusee and Egyptian pillars, circa 1690.
Case decorated with birds, original enamel dial, brass hand, central winding.
Dial with small peripheral restoration, cage with small restoration.
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Diameter: 56 mm
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Weight: 170 g
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Signed: James Goubert  Paris
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Parisian watchmaker noted since early 17th century.