Fine German rose gold open faced lever watch Circa 1915

Rose gold keyless pocket watch
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A German 14 carat rose gold open faced keyless pocket watch made by A. Lange & Söhne in Glashütte, circa 1915. The movement with a lever escapement. White enamel dial with Arabic hour numerals, an outer minute track, a sunk center and subsidiary seconds at 6 o’clock, spade hands. The case with plain bezels, pendant and bow, and an engine turned back. Dial, case and movement signed, case and movement with matching numbers. Comes with a Certificate of Origin and the original presentation box, including an additional mainspring and crystal.
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Diameter: 52 mm
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Signed: Deutsche Uhrenfabrikation Glashütte I/SA A. Lange & Söhne