Celebrating the 75th Anniversary of the Portugieser (or Portuguese) in 2015, IWC revamped nearly the full collection – introducing models, new complications and updating a good part of the existing collection.The 2015 Portugieser Perpetual Calendar still looks familiar, although it was revamped quite drastically compared to the pre-2015 model. The arched glass is one of the most notable changes, although both the case as well as the dial also got a subtle redesign. The automatic movement with a 7-day power reserve and pellaton winding system now sports twin barrels. With this watch, it is of course fitted with the perpetual calendar with the four digit year display, tracing its roots back to the 1985 Da Vinci and its Kurt Klaus-designed module.Reference IW503312 was added to the collection in 2020. This watch has an ‘Armor’ red gold case and a blue dial.
