The 20 useful tricks to tell if IWC Schaffhausen watches are Real or Fake. This guidance is applied to most series of IWC Schaffhausen watches, including IWC PORTUGIESER ETERNAL CALENDAR, IWC Pilot Watches, IWC Portofino, IWC INGENIEUR, IWC AQUATIMER, IWC CERALUME, etc. You can also visit the official website of IWC Schaffhausen (https://www.iwc.com) and apply the information from this tutorial to help you check important details of the authentification of IWC watches. In this blog, we will compare two PORTUGIESER watches to show you the tricks and it's also applied to other IWC watch series. First of all, you can tell if IWC watch is real or fake by its appearance. Additionally, if you have the instruments to open the watches, you can also check the interior of watches and movement to see if they are correct and genuine with the official models.