French gold quarter repeating a toc verge watch Circa 1780

A French gold and enamel quarter repeating a toc open faced pocket watch, circa 1780. Gilt full plate verge movement, pierced and engraved balance bridge. White enamel dial, Arabic numerals and outer minute track with Arabic numerals too. Case back with translucent purple enamel on a fine guilloché and dots background, both bezels decorated with polychrome enamel, two diamonds pushers to the side to open the watch. Movement signed and numbered 660.
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