Interesting and very early French anchor watch with alarm Circa 1820

Silver pocket watch with alarm on a bell
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A very interesting and early anchor watch with alarm on a bell of excellent quality and a very fine calibre, made by Bouhelier, in France, circa 1820. It has a silver case with bell, an enamel dial with two winding mechanisms for movement and alarm clock and special solid red gold Breguet hands and a movement with an extremely rare calibre and early side lever escapement.
Movement signed.
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Diameter: 57 mm
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Weight: 146 g
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Signed: Bouhelier
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All well-known watches that can be proven to have been manufactured by Père Bouhelier are equipped with the same linear lever escapement. Père Bouhelier was originally a priest who had to leave his homeland during the French Revolution and settled in England. It is believed that his time in England was the cornerstone of his development as a watchmaker and ultimately the use of this particular escapement found in all his watches.