IWC - Portuguese Perpetual Calendar - Dune Dial - IW503704 - 2025

*Orders outside the US are wire payment only*

Location: United States

Year: 2025

Reference number: IW503704

Accessories: Full Set

Condition: Unworn

Material: White Gold

Color Dial: Dune

IWC Portuguese Perpetual Calendar “Dune” Dial – IW503704 – 2025

The IWC Portuguese Perpetual Calendar IW503704 (2025) is a masterclass in mechanical sophistication and refined design. Showcasing IWC’s legendary perpetual calendar system, this reference combines technical brilliance with an elegant, contemporary aesthetic highlighted by its striking Dune-colored dial.

Housed in a perfectly proportioned case, the warm, sand-toned dial offers exceptional contrast and legibility, elevating the classic Portuguese design language into a modern luxury statement. The perpetual calendar displays the date, day, month, four-digit year, and moon phase, all precisely synchronized and mechanically programmed to account for leap years until the year 2100—requiring no manual correction.

At its heart beats an in-house automatic movement engineered by IWC Schaffhausen, featuring an impressive power reserve and impeccable finishing visible through the sapphire caseback. This is a timepiece created for collectors who value enduring complexity, timeless elegance, and horological pedigree.

The Portuguese Perpetual Calendar “Dune” is more than a watch—it’s a long-term investment in craftsmanship, innovation, and legacy.

Key Features

• Model: IWC Portuguese Perpetual Calendar

• Reference: IW503704

• Year: 2025

• Dial: Dune (sand-toned) dial with perpetual calendar complications

• Functions: Date, day, month, four-digit year, leap year display, moon phase

• Movement: IWC in-house automatic perpetual calendar movement

• Case: Elegant Portuguese case with sapphire crystal

• Caseback: Sapphire display back

• Strap: Luxury leather strap with folding clasp