A RARE GERMAN MILITARY LUFTWAFFE IWC NAVIGATORS WATCH CIRCA 1940 WWII, THE "BIG PILOT" D: Black dial with applied luminous markers and Arabic numerals, original hands. M: Manual wind movement with hacking seconds, signed IWC & numbered (matching with numbers on inside & outside case back). C: Large anti-corrosion military case, signed B-UHR I.W.C. & numbered, case middle numbered FL 23883 (matching with numbers on inside case back), dust cover, original crown, case diameter measures approx 55mm. S: Leather strap.