Swiss rare watch with early automatic winding Circa 1815

Gentleman’s extremely rare silver pocket watch
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A silver Swiss pocket watch with early automatic winding, centre seconds and cylinder escapement, circa 1815.
A silver case with a white enamel dial, 1/2 plate movement, early oscillating weight winding movement, three-arm brass balance.
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Diameter: 53 mm   Weight: 122 g.
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Signed: Johannes Ruegger à Genève
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Johannes Ruegger was a watchmaker in Geneva during the first half of the 19th century.
He produced watches in gold and in silver, mainly with calendar or repeating work.