German military observation pocket watch Circa 1940

Chromed military pocket watch
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An open face chromed  pocket watch, both sides glazed, Stowa precision lever movement with fine adjusting device and 19 jewels, circa 1940.
Keyless wind, luminous dial with  subsidiary dial seconds, blued steel hands, unused, like new, rare.
Military observation clock of German navy.
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Diameter: 57 mm
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Signed: No Name