French 18K gold, enamel and seed pearl set verge Circa 1800

Gold and seed pearl set verge with enamel decoration by Monchanin
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A French gold and seed pearl set key wind open faced pocket watch with enamel decoration, circa 1800. Gilt full plate fusee verge movement, pierced and engraved balance bridge, silver regulation. White enamel dial, black Roman numerals, black outer minute divisions with Arabic numeral 5 minute markers, winding aperture at 2 and gilt beetle hands. Consular case, blue enamel decoration to back, seed pearl set bezels. Movement signed.
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Diameter: 38 mm
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Signed: Monchanin A Paris