An International Watch Company Ingenieur steel Gentleman's Automatic wristwatch Ref. 666AD 1960s, silvered dial with date just, baton numerals, Dauphine hands, luminous dot markers, Calibre 8531, 21 jewels, no 1516604, replacement strap, in vintage IWC case diameter of case 3.7cm Condition: Some scratches to watch glass. Movement not tested but working at the time of cataloguing. A scratch to dial.