French rare automatic winding pocket watch Circa 1815

Silver gentleman’s pocket watch by Clerget
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A rare automatic French gentleman’s pocket watch with an early oscillating weight winding movement and virgule escapement, circa 1815.
Silver florally engraved engine turned case with reeded band and case maker’s punch mark PIG. Enamel dial with Arabic numerals and blued arrow-shaped hands. Frosted, gilt, signed full plate movement with early oscillating weight winding movement and virgule escapement.
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Diameter: 53 mm
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Weight: 115 g
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Signed: Clerget à Dijon
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Oscillating weight
In a self-winding movement, a heavy metal disc turns freely in both directions to wind the mainspring.