IWC · Da Vinci

Strap for Da Vinci Perpetual Rattrapante Platinum / Silver / German / 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
ReferenceIW9254-05 (aka: IW925405)
FamilyDa Vinci
MovementIWC caliber 79251 Hours, Minutes, Small Seconds | Date, Day, Month, Perpetual Calendar, Year Indicator | Chronograph, Rattrapante
CasePlatinum

Spring bar

Swiss Standard universal spring bars

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

The Da Vinci IW9254-05 (aka: IW925405), seen from the bench

The Da Vinci IW925405 is powered by the IWC caliber 79251 with perpetual calendar, split-seconds chronograph and indicators for date, day, month and year. The movement offers display of hours, minutes, small seconds and advanced chronograph complications. The watch features 19mm lugs for the strap.

Frequently asked questions

What is the lug width of the IWC Da Vinci IW9254-05?

The IWC Da Vinci IW9254-05 features a 19-millimetre lug width. This specific measurement is exclusive to the Da Vinci Perpetual Calendar family in platinum and is essential to proportionately balance the strap with the 39mm case diameter and the weight of the precious metal.

Which strap material pairs best with the IW9254-05 in platinum?

For the IWC Da Vinci in platinum, high-grade alligator leather—preferably vegetable-tanned—represents the most coherent aesthetic choice: the natural grain texture engages with the brushed case finish without competing visually. Viable alternatives include shell cordovan for those seeking organic lustre, or naturally vulcanised rubber for a more contemporary, tool-watch interpretation.

How do I change the strap on an IWC watch?

Strap replacement is accomplished by extracting the spring bar pins from the case lugs. Using a dedicated thin tool or blade tip, gently press one end of the bar until it yields, allowing you to withdraw the free end. The new strap is installed by aligning its holes with the pin extremities, which snap into position with a subtle click. The operation takes seconds and requires no technical expertise.

Can I use an aftermarket strap on the IWC Da Vinci IW9254-05?

Yes, provided the strap is compatible with the 19mm lug width specification. Numerous artisanal straps of superior quality are available in this particular measurement. On milanostraps.it you will find a comprehensive collection of 19mm straps, crafted from noble materials and fully customisable to personal aesthetic preferences, guaranteed for 18 months through the Casati Milano atelier.

What is the typical lifespan of a leather strap on a watch like the IWC Da Vinci?

The longevity of a leather strap depends upon construction quality, material type, and usage patterns. A high-grade alligator or calf strap, featuring vegetable tanning and artisanal stitching, typically sustains 3-5 years of daily wear before requiring replacement. With vegetable tanning, the leather develops patina and character through natural ageing. Casati Milano provides an 18-month warranty; beyond that period, strap replacement remains economically accessible.

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