The IWC Ingenieur 666 is an exceptional watch with a very sturdy case and the famous 8531 Movement. The watch works well and is in very well kept condition. The crown is a replacement.
 
*** The pictures may show the reflexion of the camera lens, black spots mostly ***
 
Details:
 
Make: IWC
Model: Ingenieur
Reference: AD666
Year: 1960's
Material: Stainless Steel
Dimensions: 36mm
Crystal: Plexi Crystal
Movement: Automatic 8531
Bracelet/Strap: Leather Band
Lug Width: 18mm
Box/Papers: No/No