French remarkable gold enamel pocket watch with chatelaine Circa 1787

Gold enamel gentleman’s pocket watch by Adamson
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A French, remarkable gold enamel gentleman’s pocket watch with matching diamond set gold chatelaine, circa 1784.
20 Carat gold case, back and bezels with translucent cobalt blue enamelling and engine-turned pattern; cut diamonds in star shaped settings, fine white enamel frame; charge mark crossed double L: Henri Clavel and Jean-Francois Kalendrin (1782-1789), Parisian guild punch mark P84 of 1784, case maker’s punch mark JLC(?) with Fleur de Lys. Matching four part chatelaine with six tablets in different sizes and shapes: translucent cobalt blue enamel with an engine-turned pattern, diamonds in star shaped settings, two watch keys and two diamond studded drop beads. Enamel dial with Arabic numerals and gold Poker & Beetle hands. Signed full capsular movement, key wind, gilt, cylinder escapement, raised barrel, and a three arm ring balance.
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Diameter: 46.2mm
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Weight: 136.4 g
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Signed: Adamson à Paris
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Adamson, Gustave Adolphe (1746 or 1747 – after 1813)
Gustave Adolphe Adamson was born in Karlskrona (Sweden) in 1746 or 1747. He is the son of Gottfried Adamson « The Elder ». He apprenticed as a watchmaker in Stockholm and came to Paris around 1765-1768. In 1773, he was recognized as a watchmaker in Paris (after having abjured the Lutheran religion on May 8, 1773). He then partners with Hippolyte Millenet, a watchmaker of Genevan origin. In 1788, he obtains the mastery and was appointed « Horloger de la Cour » (Watchmaker of the Court). He regularly collaborates with watchmaker and case maker Xavier Gide (1737-after.1789).