IWC · Ingenieur
Strap for Ingenieur SL Automatic Stainless Steel / Yellow Gold / Champagne / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter34 mm
ReferenceIW3505-14 (aka: IW350514)
FamilyIngenieur
MovementIWC caliber 375
Hours, Minutes, Seconds | Date
CaseYellow Gold, Stainless Steel
The Ingenieur IW3505-14 (aka: IW350514), seen from the bench
The IWC Ingenieur IW3505-14 is a 34mm antimagnetic watch from 1955, available in stainless steel and yellow gold with a champagne dial. It features the manual-winding IWC 375 caliber and a 20mm lug width. The integrated bracelet reflects the model's engineering philosophy, combining functionality with refined aesthetics across its decades-long heritage.
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