Silver Glashütte deck watch with power reserve Circa 1940

Open faced deck watch by A. Lange & Söhne
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A Glashütte navigation deck watch of the German Kriegsmarine M 10453 with nationality marking and 35h power reserve indicator, circa 1940. Silvered case with pushback and military engraving: swastika M 10453. Silvered dial with Arabic numerals, auxiliary seconds, 35h power reserve indication and blued spade hands. Gilt 2/3 plate movement with nickel steel screw compensation balance, blued balance spring and index spring fine adjusting device.
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Diameter: 59 mm
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Weight: 163 g
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Signed: A. Lange & Söhne Glashütte i/SA