IWC · Da Vinci

Strap for Da Vinci Perpetual Rattrapante Yellow Gold / Silver / French / Bracelet

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

19mm
Lug width19 mm
Case diameter39 mm
ReferenceIW9254-04 (aka: IW925404)
FamilyDa Vinci
MovementIWC caliber 79251 Hours, Minutes, Small Seconds | Date, Day, Month, Perpetual Calendar, Year Indicator | Chronograph, Rattrapante
CaseYellow Gold

Spring bar

Swiss Standard universal spring bars

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

The Da Vinci IW9254-04 (aka: IW925404), seen from the bench

The IWC Da Vinci ref. IW925404 is powered by the caliber 79251 with perpetual calendar and split-seconds chronograph functions. The movement displays hours, minutes, small seconds, date, day, month, and year through the perpetual calendar mechanism. The case features 19mm lug width for the strap.

Frequently asked questions

What is the exact lug width of the IWC Da Vinci IW9254-04?

The lug width is 19mm, measured between the internal holes where the lugs sit on the case. This dimension is standard across modern Da Vinci models and must be verified before ordering any aftermarket strap.

Which strap would you recommend for the IWC Da Vinci IW9254-04 in yellow gold?

Alligator leather in vegetable tanning represents the most refined choice, allowing a natural patina that dialogues with gold. Alternatively, matte brown calf or cognac shell cordovan offer elegance and conscious ageing. For daily wear, FKM rubber in black or dark blue ensures practicality without aesthetic compromise.

How do I change the strap on the IWC Da Vinci IW9254-04?

Obtain a spring bar removal tool. Gently position the tool beneath one end of the lug to release the internal spring, lift the pin, repeat on the other side. Insert the new strap by aligning the lug holes with the case pins, pressing until you hear the spring click into position.

Can I use an aftermarket strap on this watch?

Yes, provided the strap is milled or constructed to accommodate 19mm pins. We recommend straps from specialised suppliers who guarantee millimetre-level compatibility and build quality consistent with the watch's value.

How long does a leather strap last on a watch of this calibre?

A quality leather strap with vegetable tanning or shell cordovan typically lasts 3–5 years with regular use and ordinary maintenance (monthly cleaning, protection from excessive moisture). Leather type, thickness, frequency of wear and climate significantly influence longevity.

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