- Since 2010
- 12 Month Warranty
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The IWC Portugieser Annual Calendar IW503502 is the original 44.2 mm stainless steel masterpiece with midnight-blue sunburst dial, triple-window annual calendar, and in-house 7-day Calibre 52850. Santoni alligator strap, sapphire display back — the blue-dial Portugieser that redefined modern elegance.
| IWC Portugieser Annual Calendar IW503502 | Portugieser Annual Calendar |
|---|---|
| Case size | 44mm |
| Case material | Stainless Steel |
| Movement type | Automatic |
| Condition | This timepiece has undergone a thorough inspection of water resistance, accuracy, functionality and condition to determine the level of reconditioning required to meet our strict standards. It has als |
| Crystal type | Sapphire Crystal |
| Gender | Male |
| Has Box | Yes |
| Has Papers | Yes |
| Year | 2017 |
The IWC Portugieser Annual Calendar IW503502 (introduced 2015) is the original and most iconic version of IWC’s groundbreaking triple-window annual calendar — now universally regarded as one of the cleanest, most elegant high complications in modern horology. Housed in a perfectly proportioned 44.2 mm stainless steel case (14.9 mm thick), it features the legendary midnight-blue sunburst dial that shifts from near-black to electric sapphire depending on the light.
The symmetrical layout is pure genius: large date at 12 o’clock, day at 9, month at 3, week-number indicator between 8 and 9, and small seconds at 6 — all powered by the in-house Calibre 52850 automatic movement with twin barrels, Pellaton ceramic winding, and a massive 7-day (168-hour) power reserve. The beautifully decorated movement and gold-plated rotor are visible through the sapphire caseback.
Delivered on a black Santoni alligator strap with stainless steel folding clasp, the IW503502 remains the benchmark Portugieser for collectors who value complication, legibility, and understated beauty. Although newer references exist, this blue-dial original is the one that started the legend.
Key Features of the IWC Portugieser Annual Calendar IW503502:
