IWC Ingenieur "Grey Dial"
Case Stainless steel housing with soft iron magnetic shield Dial Matte grey dial with applied line indices and tritium luminous dots, dauphine hands, date at 3 o'clock, signed "International Watch Co., Ingenieur" (replaced) Movement Rhodium-plated automatic movement with snailing finish, Pellaton winding and Breguet hairspring Cal. 8531 Ref. 666AD Movement No. 1724238 Case No. 1872549 D= 35mm Year ca.1963 Case: Very good, small signs of use, repolished edges preserved Dial: Good; According to IWC it should be white (not a grey) dial Movement: Very good; Movement was replaced by IWC in the 1970s Amplitude (Dial on top/Lift angle 52): 290° Accuracy (Dial on top): + 15 s/d
