French 18k rose gold à toc quarter repeating verge Circa 1800

Open faced à toc repeating verge with revolutionary date by Le Roy
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A fine and rare French 18 carat rose gold open faced à toc quarter repeating verge watch with revolutionary date, circa 1800. Full plate gilt finished verge movement, fusée, balance cock pierced and engraved with letters LR, à toc quarter repeating on one steel hammer onto a gold block in the case, engraved scroll decorated band signed Le Roy, hinged gilt dust cover. White enamel dial with Breguet numerals and inner gold revolutionary date ring calibrated for 30 days with central date hand. Plain case, repeating through the pendant. Case stamped with French guarantee mark for 20 carat gold, dial signed, movement signed and numbered.
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Diameter: 60 mm
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Signed: Le Roy au ci-devant Palais Royal