International Watch Co., Schaffhausen "Ingenieur", Case No. 2011496, Ref. 866A, 37 mm, circa 1970

A gentleman's fine, antimagnetic, automatic wristwatch with centre seconds - We have knowledge of only 4 other examples of reference 866 without date indication. In September 2014 the watch was given a general overhaul by IWC - with IWC repair warranty and box
Case: steel, screw back, protection cap against magnetism, IWC steel bracelet with deployant clasp. Dial: grey, applied luminous indexes, luminous baton hands. Movm.: rotorwind movement, rhodium-plated, "fausses côtes" decoration, 5 adj., 23 jewels, Glucydur balance, shock protection for balance, cam type fine adjusting device.