German plain silver deck watch of the Kriegmarine Circa 1941

Silver Kriegsmarine deck watch by A. Lange & Söhne
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Early and extremely rare German silver deck watch of the Kriegsmarine, circa 1941. Gilt lever movement with extra large balance, ankerchronometer, double punched, fine adjusting device, signed plate. Silvered dial with indication of 35 hours power reserve and blued steel hands. Plain case, early version with hinged lid and in solid 900 silver, completely punched and numbered. Case and movement matching number 201228, movement signed. Comes with an extract from the archives.
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Diameter: 60 mm
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Weight: 169 g
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Signed: A. Lange & Söhne i.Sa.
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One of the earliest versions of this deck chronometer, completely produced in Glashütte, which was not the case with later versions of these watches.