French silver quarter repeating pocket watch Circa 1812

Pocket watch with experimental club-tooth lever escapement
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A gentleman’s important and rare quarter repeating pocket
watch with experimental club-tooth lever escapement (side lever escapement), circa 1812.
Silver case, polished, tiered. Enamel dial, Arabic numerals, blued Breguet hands. Bridge movement, frosted, gilt, keywind, 2 hammers and 2 gongs, signed going barrel, three arm gold balance with locking ring, diamond endstone on balance, pink gilt escape wheel with slit teeth, steel lever with three pins.
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Diameter: 55 mm  
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Weight: 112 gr.
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Signed: Hahn Horloger et Mécanicien à Paris