The IWC Ingenieur was originally launched in 1944 and since then, it has experienced several changes and major redesigns. Perhaps the most noticeable changes, took place in 1976, 2005 and in 2008. Trying to emulate the concept of the Audemars Piguet Royal Oak and the Patek Philippe Nautilus, IWC hired Gerald Genta to give a facelift to the iconic Ingenieur giving birth to the Ingenieur SL 'Steel Line'.