French silver grande and petite sonnerie watch Circa 1838

Silver self striking pocket watch by B-L Petit
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A large, heavy French quarter repeating pocket watch with Grande and Petite Sonnerie self strike, circa 1838.
A silver, engine-turned case with numbered and signed gold dome, case maker’s punch mark LS, slide for silence, seven-piece gold hinge, and slide for selection of Quarts simples or Sonnerie des Heures et Quarts. Signed enamel dial with radial Roman hours and blued Breguet hands. Full plate movement, keywind, frosted, and gilt; with two hammers / two gongs, chain/fusee, barrel for striking train, baluster movement pillars, cylinder escapement with sapphire cylinder, gilt three-arm ring balance, and striking mechanism controlled by governor and a second roller shaped wheel.
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Diameter: 64 mm
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Weight: 225 g
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Signed:  B-L Petit Paris
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B-L Petit had his own business at Rue St. Honoré no. 340 from around 1810 until about 1840, and when we look at this watch we must assume that he was one of the best French makers of precision watches of his time. He was the son-in-law of and successor to Parisian watchmaker Claude Mathieu le Ainé and most likely his pupil too; Claude Mathieu le Ainé created his masterpiece in 1754 and opened his own workshop in the Rue des Capucines at Place Vendome in 1757. He produced pocket watches and pendulum clocks and in 1759 he moved to Rue St. Honoré 7 – most likely to be closer to a wealthy clientele. In 1766 he had a dispute with some creditors. He most likely died in 1810, because a widow Mathieu is registered at the Rue St. Honoré address that year.