Rare French verge with enamel and visible balance Circa 1800

Verge pocket watch with enamel painting and visible balance
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A very rare French verge pocket watch with enamel painting and visible mock pedulum at the back, Paris, circa 1800.
Silver case, both sides glazed, ribbed band, rare and nice verge movement, full plate fire gilt movement, regulator at the back, main plate with floral decoration, verge escapement.
Decentralized enamel dial with subsidiary compass and subsidiary seconds and enamel cartouche, visible mock pedulum at the back, blued steel Breguet hands.
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Diameter: 55 mm
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Weight: 106 g
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Signed: Berthoud à Paris
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Reference 014000