IWC · Da Vinci

Strap for Da Vinci Perpetual Calendar Digital Date-Month Platinum

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

24mm
Lug width24 mm
Case diameter44 mm
ReferenceIW3761-01 (aka: 3761-01, IW376101)
FamilyDa Vinci
MovementIWC caliber 89800 Hours, Minutes, Small Seconds | Big Date, Leap Year, Month, Perpetual Calendar, Date | Chronograph, Flyback
CasePlatinum

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Da Vinci IW3761-01 (aka: 3761-01, IW376101)

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Da Vinci IW3761-01 (aka: 3761-01, IW376101), seen from the bench

The IWC Da Vinci IW3761-01 is a perpetual calendar chronograph launched in 1985, featuring the IWC 89800 caliber movement. The platinum case measures 44 mm in diameter with a 15.5 mm thickness, paired with a distinctive 24 mm lug width. This model combines mechanical precision certified to ±4 seconds per day with the durability of platinum, representing a landmark in contemporary complicated watchmaking.

Frequently asked questions

What is the exact lug width of the IWC Da Vinci IW3761-01?

The IWC Da Vinci IW3761-01 features a lug width of 24 mm, a non-standard dimension that requires specific watch straps. This measurement is taken between the spring bar pins and is essential to ensure a precise fit without undesirable gaps.

Which strap is best suited for the IWC Da Vinci IW3761-01 in platinum?

Deep black alligator remains the noblest choice for the platinum Da Vinci: its natural texture with geometrically arranged pores harmonises perfectly with the perpetual calendar's complexity. Alternatively, shell cordovan offers a natural patina that ages magnificently, or vegetable-tanned calf leather for those preferring a more contemporary solution.

How do I change the strap on the IWC Da Vinci IW3761-01?

The Da Vinci IW3761-01 uses a spring bar bayonet fastening to secure the strap to the lugs. Gently press the spring from the underside of the case to release the strap, then carefully extract downwards. When inserting a new strap, ensure the spring clicks fully into place, verifying with your fingers that the strap is firmly secured.

Can I use an aftermarket quality strap on this watch?

Yes, absolutely. However, the 24 mm lug width is non-standard: you will not find generic straps readily available. We recommend bespoke, artisanal straps specifically manufactured for this width to guarantee maximum compatibility and construction quality.

How long does a leather strap last on a watch like the Da Vinci IW3761-01?

Durability varies based on material and usage. An alligator or shell cordovan strap, with regular maintenance, lasts 5–8 years with daily wear. Vegetable-tanned calf leather has a slightly shorter lifespan of 3–5 years. Ageing is part of the charm: the leather matures, developing a unique patina.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only