IWC Portugieser Sidérale Scafusia 46 mm Platinum Black Dial

The IWC Portugieser Sidérale Scafusia stands at the absolute summit of haute horlogerie—an ultra-complex masterpiece created only on commission and individually personalized for each collector. Crafted in platinum, the 46 mm case houses one of IWC’s most technically advanced movements, uniting astronomical precision with the timeless aesthetics of the Portugieser lineage.

The black dial serves as a dramatic stage for the exceptional complications. At its heart lies the constant-force tourbillon, engineered to deliver unwavering amplitude and extraordinary timekeeping stability. Surrounding this mechanical centerpiece are meticulously designed subdials indicating a collection of celestial functions, including sidereal time, power reserve, and refined astronomical indications that speak to the watch’s scientific soul.

Each Sidérale Scafusia is bespoke—its celestial map, horizon, and astronomical data are tailored to the owner’s chosen coordinates, making every piece a singular work of technical art. Combined with the richness of platinum and the depth of the black dial, the watch embodies IWC’s highest expression of precision engineering, artisanal finishing, and philosophical watchmaking.