IWC · Portugieser
Strap for Portugieser Automatic 42 Stainless Steel / Silver
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
18mm
Lug width18 mm
Case diameter42 mm
ReferenceIW5017-01 (aka: IW501701)
FamilyPortugieser
MovementIWC caliber 52011 hours, minutes, small seconds | date | power reserve indicator
Year2024
CaseStainless Steel
Straps for the Portugieser IW5017-01 (aka: IW501701)
Selected for the 18 mm lug width
Hammered Calfskin Strap Light Blue€98
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
The Portugieser IW5017-01 (aka: IW501701), seen from the bench
The Portugieser IW5017-01, introduced in 1939 as a precision instrument for navigators, represents a pinnacle of watchmaking refinement. The 42.40mm stainless steel 316L case features a rationalist dial with applied indices and date window at 3 o'clock. The IWC Calibre 52011 automatic movement provides hours, minutes, small seconds, date, and power reserve indicator. The 18mm lug width creates structural balance between the case diameter and wrist integration, designed for precise strap compatibility without visual imbalance.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only