German WW2 Original Kreigsmarine Issue Wristwatch

Well documented example in the wonderful reference book “ A Concise Guide to Military Timepieces” by Z Wesolowski.

Maker mark code “ 592” for the Alpina watch company. Along with “KM” on the dial. Winds and tick over but no guarantee on working order longevity. Most likely needs a good service.
No wristband.

Code: 3699