IWC · Pilot

Strap for Pilot's Watch Mark XV Spitfire Stainless Steel / Silver / Teatro alla Scala

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 diameter38 mm
ReferenceIW3253-15 (aka: IW325315)
FamilyPilot
MovementIWC caliber 37524 Hours, Minutes, Seconds, World Time | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The Pilot IW3253-15 (aka: IW325315), seen from the bench

The IWC Pilot IW3253-15 is a 38mm stainless steel watch featuring an automatic caliber 37524 movement beating at 28,800 vibrations per hour with a 42-hour power reserve. The milky white dial, unidirectional bezel, and sapphire crystal with anti-reflective coating define its functional design heritage from 1950s aviator chronographs. Water-resistant to 60 meters and 10.6mm thick, this model requires a 19mm lug width for strap compatibility.

Frequently asked questions

What is the lug width of the IWC Pilot IW3253-15?

The lug width of the IWC Pilot IW3253-15 is 19mm. This measurement represents the distance between the lugs that hold the strap and is the fundamental parameter for identifying compatible straps. Precise measurement is essential: even a 1mm variation can render the strap unusable.

Which strap is recommended for the IWC Pilot IW3253-15?

For the IWC Pilot IW3253-15, we recommend an alligator strap with medium grain for formal contexts, vegetable-tanned calf leather for versatile daily wear, or canvas NATO for emphasising the aviator heritage. The choice depends on intended use and personal aesthetic preferences. All materials must be compatible with the 19mm lug width.

How do you change the strap on a watch with 19mm lugs?

To change the strap, use a spring bar tool to gently remove the pins from the case. Position the tool in the slots on either side of the pin, apply gentle pressure and slide the pin outward. Repeat for both sides. Insert the new strap by aligning the holes in the leather with the pins, then push the pins through until they click into place. Ensure the pins are fully secured before wearing the watch.

Are there aftermarket straps compatible with the IW3253-15?

Yes, any strap with a 19mm lug width is compatible with the IW3253-15. Milano Straps offers a range of artisanal straps in premium materials (alligator, shell cordovan, vegetable-tanned calf, fabrics) all available in 19mm. The Casati Milano atelier also creates fully bespoke straps with leather selection and custom stitching details.

How long does a natural leather strap last on a watch like the IWC Pilot?

A high-quality strap with vegetable tanning has an estimated lifespan of 3–5 years with moderate daily use. Longevity depends on environmental humidity, cleaning frequency and leather quality. Artisanal straps from Milano Straps are crafted from premium hides and come with an 18-month warranty. The natural patina that develops over time adds character without compromising structural integrity.

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