German 18K gold open faced lever pocket watch Circa 1908

Fine gentlemen’s watch in quality 1A
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A fine A. Lange & Söhne gentlemen’s watch in quality 1A, Glashütte circa 1908.
An 18 carat gold, engine-turned, solid unusual-shaped case with only one hinge, case number 57948, movement number 47948 (probably punch mistake).
A. Lange & Söhne precision lever movement in best quality 1A with screwed golden chatons, diamond end stone, golden lever, golden escape wheel and fine regulation.
Nicely engraved cage, original enamel dial, golden hands, in very good condition of preservation, with extract of the archive.
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Diameter: 50 mm
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Weight: 78 g
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Signed:  A. Lange & Söhne  Glashütte