IWC
Portugieser Perpetual Calendar 44 IW503702
44.4mmCurrent Production
Retail: $56,800
IWC Schaffhausen’s perpetual calendar was originally developed during the 1980s by former head-watchmaker Kurt Klaus. In 2003, the legendary complication was presented in the Portugieser collection for the first time. Since then, the Portugieser Perpetual Calendar has been a major pillar of the collection.
Source: IWC website, last updated Mar 2026
![[WTS] IWC Pilot Spitfire IW326803 - 39mm - Full Kit - Fresh Service!](/_next/image?url=https%3A%2F%2Fi.redd.it%2Fwz3d8a4knasg1.jpg&w=1200&q=75)
![[WTS] IWC Pilot’s Watch Chronograph 41 Mercedes-AMG Petronas “Miami Edition” IW388114](/_next/image?url=https%3A%2F%2Fi.redd.it%2Ft2yndehdl7sg1.jpg&w=1200&q=75)
![[WTS] IWC Aquatimer Chronograph on Bracelet IW371928 $2,950](/_next/image?url=https%3A%2F%2Fi.redd.it%2Feqvwuk0hi7sg1.jpeg&w=1200&q=75)
![[WTS] PRICE DROP! 1960s IWC Automatic Stainless Calatrava](/_next/image?url=https%3A%2F%2Fi.redd.it%2F3l3z6b1im3sg1.jpg&w=1200&q=75)
![[WTS] IWC Mark XVI Spitfire. Caseback STILL stickered!! $2499!!](/_next/image?url=https%3A%2F%2Fi.redd.it%2F1algbliqy0sg1.jpg&w=1200&q=75)
