Unusual French silver verge watch with calendar Circa 1790

Silver verge watch with calendar and subsidiary seconds
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An unusual French silver verge watch with calendar and subsidiary seconds, circa 1790. Gilt full plate movement pierced and engraved, pierced and engraved balance cock with coqueret, silver regulater disc with blue indicator.
Winding through the white enamel dial Arabic numerals, outer Arabic red minute track, decorative hands. Silver plain case. Dial and movement not signed.
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Diameter: 53 mm   Weight: 86 g
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Signed: No name
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A bit bumpy at the back. Some restoration.
Overall in good condition.
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Reference 011000