Large German silver lever watch with power reserve Circa 1930

Silver open faced pocket watch
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A large silver open faced watch with power reserve, circa 1930. Gilt three-quarter plate lever movement, bimetallic balance, silver dial, Arabic numerals, two subsidiary dials for constant seconds and power reserve indication, case with hour pin set mechanism on the band. Dial, cuvette and movement signed.
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Diameter: 59,5 mm
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Signed:  Lange & Söhne  Glashutte/SA
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Various owners