Swiss gold and enamel mandolin shaped form watch Circa 1800

Gold and enamel verge form watch
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A fine Swiss, 18 carat gold and enamel key wind form watch with a concealed dial, designed as a mandolin, circa 1800. Gilt full plate fusee verge movement, pierced and engraved balance bridge, silver regulation.
White enamel dial, black Arabic numerals, black outer minute divisions with Arabic numeral 15 minute markers, winding aperture at 2, blued steel hands.
Gold case in the form of a mandolin, engraved and decorated with red, green and blue enamel to the body, green and blue enamel decoration to sound board, blue and black enamel striped neck, black and blue head.
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Dimensions: 24 x 55 mm
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Signed: No Name