French ultra-thin watch with digital hour indicator Circa 1830

Rare gold and enamel digital cylinder watch
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A French rare, ultra-thin gold and enamel hunting cased gentleman’s pocket watch with jumping digital hour indicator, circa 1830.
The case is decorated en taille d’épargne, black opaque enamel with scrolling foliage, a gold cuvette. Silver floral engraved dial with an eccentric minute dial and aperture for the jumping hours with Arabic numerals. Gilt frosted bridge movement, key wind, cylinder escapement and a three-arm brass balance.
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Diameter: 40 mm
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Weight: 35 g
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Signed: No name
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Taille d’épargne is sometimes referred to as black enamel tracery. Taille d’épargne is a form of champlevé, an enamelling technique where opaque enamel is used to fill low-relief etchings in metal.