IWIW504501-Portugieser Perpetual Calendar Tourbillon Edition “150 Years”


Portugieser Perpetual Calendar Tourbillon Edition “150 Years” Add to my wishlist

Price includes taxes and shipping.
Price includes taxes and shipping.

18 ct 5N gold case, Automatic, self-winding, Diameter 45.0 mm.

Made in Schaffhausen, Switzerland.

Available to buy online. Orders can be returned within 14 days free of charge.

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IW504501 Specifications



  • 18 ct 5N gold case
  • Diameter 45.0 mm
  • Height 15.3 mm
  • See-through sapphire glass back
  • Water resistance 3 bar



  • 51950 Calibre
  • IWC-manufactured movement
  • Automatic, self-winding
  • 168 hours Power Reserve
  • Frequency 19800.0 vph (2.75 hz)
  • 456 Components
  • 44 Jewels
  • Côtes de Genève, perlage



  • Flying minute tourbillon
  • Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase
  • 7 days power reserve
  • Power reserve display
  • Sapphire glass, arched-edge, antireflective coating on both sides
  • Pellaton automatic winding
  • Rotor in 18-carat 5N gold
  • Limited to 50 pieces



  • White dial



  • Black alligator leather strap by Santoni
  • Strap width 22 mm

The Portugieser Perpetual Calendar Tourbillon Edition “150 Years” Story

With the Portugieser Perpetual Calendar Tourbillon Edition “150 Years”, IWC combines the legendary perpetual calendar from Kurt Klaus with a tourbillon on the dial for the first time. This masterpiece of watchmaking is available in a limited edition of 50 watches. It has an 18-carat 5N gold case, a white dial with a lacquered finish, and blued hands. The watch is powered by the IWC-manufactured 51950 calibre, an extension of the 51900 calibre with the addition of a perpetual calendar. To make the tourbillon visible at “12 o’clock”, the designers opened up the calendar advance ring and integrated the moon phase in the month display at “6 o’clock”. This tourbillon complication is made up of 82 individual components and weighs just 0.635 grams. With its solid gold rotor, the automatic Pellaton winding system generates a power reserve of 7 days.

Calibre Family 50000

The 50000-calibre family features the efficient Pellaton pawl-winding system with a 7-day power reserve and a Breguet spring for maximum precision.

Moon phase display

IWC’s moon phase displays are not just aesthetic works of art – they are extremely precise and diverge from the actual phase of the moon by just 1 day in 577.5 years.

Perpetual calendar

The perpetual calendar is one of the most fascinating haute horlogerie complications: It is mechanically programmed for 577 years.

Tourbillon Mystère

Watch lovers are fascinated by the arrangement of the “flying” tourbillon, consisting of 82 parts, against a deep black background.

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