German lever watch with silver open faced case Circa 1915

Silver gentleman’s watch
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A gentleman’s pocket watch made by A. Lange & Söhne in Glashütte, Germany, circa 1915. The open faced silver case has gold hinges. The white enamel dial has Arabic hour numerals, an outer minute track, sunk subsidiary seconds at 6 o’clock and Breguet hands. The DUF quality movement has a gold escape wheel, gold lever escapement and a fine adjusting device.
Case and movement have matching numbers, dial and movement are signed.
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Diameter: 51 mm
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Weight: 80 g
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Signed: Deutsche Uhrenfabrikation Glashütte I/SA A. Lange & Söhne
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Deutsche Uhrenfabrikation, often abbreviated as DUF, is a historical brand and quality designation for pocket watches, introduced in 1878 by the renowned manufacturer A. Lange & Söhne in Glashütte. The brand was founded to offer sturdier, more affordable pocket watches that nevertheless met the high quality standards of Glashütte.