German large 18K gold hunting cased Louis XV watch Circa 1912

Gold full hunter with integral Guillaume balance
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A large, very fine full hunter cased Louis XV pocket watch made by A. Lange & Söhne in Glashütte bei Dresden, Germany, circa 1912. This numbered watch, which was crafted from 18 carat gold, has a monogram on the front. The white enamel dial has black Arabic hour numerals, an outer minute track, red Arabic five minutes, a subsidiary seconds dial at 6 o’clock and gold Louis XV hands. The numbered quality 1A movement has a lever escapement, diamond end stone, screwed gold chatons, a gold escape wheel, gold lever and special version of the integral Guillaume balance.
Case and movement have matching numbers, case, dial and movement are signed.
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Diameter: 54.5 mm
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Weight: 118 g
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Signed: A. Lange & Söhne Glashütt B/Dresden