Portuguese Family

Portuguese Perpetual Calendar

Share:
14 comments — Join The Discussion
Portuguese Perpetual Calendar Reference 5021 - Intro

reference 5032

Apart from the date, day, month and year in four digits, the Portuguese Perpetual Calendar also shows the number of days remaining until the next full moon. The moon’s progress as shown by the watch deviates from its actual course by just 12 seconds each lunar period.

Highlights

  • Pellaton Automatic Winding
  • 7-day Power Reserve
  • Power Reserve Display
  • Perpetual Calendar
  • Diameter 44.2 mm

Price: $37,900 — $41,900

Please contact our concierge for purchase advice

COUNTDOWN TO THE NEXT FULL MOON

The moon was useful to sailors on the open sea not only for navigational purposes. Its influence on coastal tides has always been of greater importance, because the timing of their ebb and flow is reliably dictated by the moon: at new and full moon, high tides are exceptionally high and low tides exceptionally low. In the English Channel the difference can be up to 11.5 metres and in the Gulf of Maine as much as 21 metres, which illustrates the enormous importance of the moon for shipping. Aside from the date, day, month and year in four digits, the Portuguese Perpetual Calendar also indicates the number of days remaining until the next full moon. The display showing its course and featuring mirror images of the moon in the northern and southern hemispheres deviates from the moon's actual progress by just 12 seconds in one lunar period. The striking colour combination found in the new version in white gold will increase its attractiveness to watch lovers and stargazers: the rhodium-plated moon-phase indicator discs wax and wane thanks to a midnight blue cut-out display in a dial also finished in midnight blue. In the model with the red gold case, the warm tone provides a pleasing contrast to the black dial.

Variations

Details

  • Reference IW503203
  • Case Material 18-carat white gold
  • Bracelet/Strap black alligator leather strap
  • Dial Colour midnight blue
  • Jewels 62
  • Calibre 51614
  • Price $41,900
  • Mechanical movement
  • Pellaton automatic winding
  • 7-day power reserve when fully wound
  • Power reserve display
  • Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase for the northern and southern hemispheres
  • Small hacking seconds
  • Glucydur®* beryllium alloy balance with high-precision adjustment cam on balance arms
  • Breguet spring
  • Rotor with 18-carat gold medallion
  • Sapphire glass, convex, antireflective coating on both sides
  • See-through sapphire-glass back
  • Water-resistant 3 bar
  • Case height 15.5 mm
  • Diameter 44.2 mm
  • *IWC Schaffhausen is not the owner of the Glucydur® trademark.

  • Reference IW503202
  • Case Material 18-carat red gold
  • Bracelet/Strap dark brown alligator leather strap
  • Dial Colour black
  • Jewels 62
  • Calibre 51614
  • Price $37,900
  • Mechanical movement
  • Pellaton automatic winding
  • 7-day power reserve when fully wound
  • Power reserve display
  • Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase for the northern and southern hemispheres
  • Small hacking seconds
  • Glucydur®* beryllium alloy balance with high-precision adjustment cam on balance arms
  • Breguet spring
  • Rotor with 18-carat gold medallion
  • Sapphire glass, convex, antireflective coating on both sides
  • See-through sapphire-glass back
  • Water-resistant 3 bar
  • Case height 15.5 mm
  • Diameter 44.2 mm
  • *IWC Schaffhausen is not the owner of the Glucydur® trademark.

Watch Viewer

  • IW503203 Watch Front
  • IW503203 Watch Back
  • IW503202 Watch Front
  • IW503202 Watch Back

Enlarge

Perpetual Calendar

Analogue date displays with hands have a long tradition in IWC watches featuring perpetual calendars. In the case of the Portuguese Perpetual Calendar, for instance, the date, day and month are to be found on three subdials and, thanks to the clear layout, are extremely easy to read. The classic moon phase display – whether a single moon, or a double one for the northern and southern hemispheres – is based on discs and is usually found at “12 o’clock”. The moon phase displays used in the Grande Complication and the Da Vinci Perpetual Calendar Edition Kurt Klaus are astonishingly accurate and deviate by just 0.002 percent, or one day, after 122 years. The Portuguese Perpetual Calendar is even more precise. Larger moon phase wheels with different numbers of teeth reduce the deviation so drastically that a future inheritor of the watch would theoretically need to take it to a watchmaker to have it adjusted by only one day in 577.5 years.

Comments

Have something to say?

Sign in or register
to leave a comment

14 comments

  • Raj 1 year, 3 months ago

    Anybody know the retail price on this one?

  • elneco 1 year, 3 months ago

    i live in the U.S. can this be shipped to me?

  • Gregg 1 year, 2 months ago

    around 31000 euros!

  • Goats 1 year, 2 months ago

    if only i had this kind of money.....

  • kittsang 1 year, 2 months ago

    What is the retail price of 5021 in HK?

  • Sunflower 11 months, 4 weeks ago

    A really great looking watch!

  • Binford 11 months, 4 weeks ago

    Why has this changed reference numbers from the 5021 to the 5032? Why is the 5023 a different reference number instead of a model within this one? Very confusing... the 5021-21 is my next watch, but not understanding the reference number changes, please explain. Thanks.

  • Tony Giles 10 months, 3 weeks ago

    The above watch IW503203 is not a limited edition/production. How come I can only find it in IWC boutique but not at authorised retailers in Singapore. Appreciate if you can let me know when can I get from the authorised retailers in Singapore? Thanks.

  • radion 9 months, 2 weeks ago

    Nursing a semi over this timepiece

  • jwcy 8 months, 1 week ago

    love this watch very much!

  • laurent M 4 months, 4 weeks ago

    I have one since 2003, no maintenance so far, the watch is very accurate and after almost 10 years this is a very rare moment when I put it on my wrist.

  • Alex Wong 4 months, 2 weeks ago

    After 20+ Rolex, I finally discover IWC while watch Shia Labaouf sport one in Wall Street, just brought a WG Big Pilot, and picking up a RG Portuguese Perpetual Calendar in 2 days. I want to get it before the New Year to see the Year change. Can't wait.

  • imaginos1988 4 months, 1 week ago

    Truly an astonishing piece.

  • Eric BASIOR 2 months ago

    This wonderfull manly and very luxuous watch is one of the most beautiful and desirable in the world, especially with this admising midnight blue dial colour , and almost, it's very usefull and practical with the perpetual calendar ... A dream, especially in white gold or platinium , which has its price (totally justified) ! ...

Arrow Down 7View all 14 commentsArrow Down

Join IWC

Probus
Free Membership Benefits
  • Access to exclusive content
  • The IWC Community
  • Receive the email newsletter
Further Exploration

From the collection

Go
Pilot's Watch Chronograph Top Gun

Chronograph with flyback function. The IWC-manufactured 89365 calibre is protected against magnetism by a soft-iron inner case. The dial references classic cockpit-style ...

Experiences

Experience - Tradition Still Sails - Hero Experience Landing Go
Tradition still sails

A sextant is an optical measuring device used to determine the angle between a celestial body – preferably the sun – and the horizon ...

Experiences

Experience - Moonbird -Article Hero Go
Moonbird

Sailing means freedom, dynamism, enjoying life, being at one with nature, with the heaving sea. For IWC, Patrice Quesnel took the luxury ...