IWC Schaffhausen IW459004 Portofino Automatic Moon Phase 37 Black Diamond White Gold Set with Diamonds Black Leather 37mm Automatic IWC Schaffhausen IW459004 Portofino Automatic Moon Phase…

The IWC Schaffhausen Portofino collection has long represented the purest distillation of the Schaffhausen manufacture's design philosophy: clean, classical proportions inspired by the effortless elegance of the Italian Riviera town from which the line takes its name. Since its introduction, the Portofino has served as IWC's definitive dress watch family — a counterpoint to the brand's more technically assertive pilot and diver lines — and the IW459004 sits at the very pinnacle of that tradition.

The reference IW459004 is built around a 37mm white gold case, a size that IWC has carefully chosen to suit a broad range of wrists while retaining the refined, understated proportions that define the Portofino aesthetic. White gold lends the watch a cooler, more contemporary luminosity than yellow or rose gold, amplifying the brilliance of the factory-set diamonds that ring the bezel. These are not aftermarket additions — the diamond setting is applied at the IWC manufacture, ensuring perfect integration with the case architecture and preserving the watch's full manufacturer warranty and provenance.

The black dial is one of the IW459004's most arresting features. Factory-set diamonds replace conventional hour indices, their cut facets catching the light against a deep, dark background that creates a striking visual tension. This dial configuration gives the watch an evening-ready drama while the moon phase complication — one of the most poetic displays in watchmaking — adds genuine horological depth. The moon phase aperture is a hallmark of the Portofino Automatic Moon Phase family and speaks directly to IWC's commitment to offering meaningful complications within elegant dress watch packaging.

Powering the IW459004 is an IWC automatic movement, a self-winding caliber that delivers the convenience of automatic winding in a slim, dress-appropriate profile. The movement is regulated and cased at IWC's manufacture in Schaffhausen, Switzerland, reflecting the brand's full in-house production capabilities. Worn daily, the watch winds itself through the motion of the wrist, keeping the moon phase display accurately tracking the lunar cycle with minimal adjustment required.

On the wrist, the 37mm white gold case wears with the refined lightness that only precious metal can provide, while the black leather strap grounds the piece and balances its brilliance with a touch of understated classic style. The combination of white gold, pavé diamond bezel, black diamond-set dial, and supple leather creates a watch that transitions seamlessly from a business setting to a formal evening occasion.

Purchasing from Bizak & Co. means you receive an authenticated timepiece from a trusted luxury watch dealer with deep expertise in IWC references. We invite you to contact us directly at bizakandco.com to inquire, confirm availability, or complete your purchase with confidence.