IWC · Da Vinci

Strap for Da Vinci Perpetual Rattrapante Rose Gold / Silver / English

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 diameter42 mm
ReferenceIW3754-03 (aka: 3754-03, IW375403)
FamilyDa Vinci
MovementIWC caliber 79251 hours, minutes, small seconds | date, day, month, perpetual calendar, year indicator | Chronograph, Rattrapante
Year2000 - 2004
CaseRose Gold

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 IW3754-03 (aka: 3754-03, IW375403)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Da Vinci IW3754-03 (aka: 3754-03, IW375403), seen from the bench

The IWC Da Vinci IW3754-03 is a perpetual calendar chronograph with rattrapante complication housed in a 41.50 mm 18-karat rose gold case. The IWC caliber 79251 manual-wound movement features hours, minutes, small seconds, date, day, month, year indication, and split-seconds chronograph on three subdials. The 20 mm lug width ensures proportional balance with the case diameter and 14.80 mm thickness. Water resistant to 60 meters with screw-down caseback. The rose gold material defines the watch's chromatic character, requiring a strap that complements rather than competes with the metal's luminosity.

Frequently asked questions

What is the exact lug width of the IWC Da Vinci IW3754-03?

The lug width is 20 mm. This measurement represents the proportional balance for a case diameter of 41.50 mm. To verify it, measure the free space between the two ends of the lugs: the result must be 20.00 ± 0.10 mm. All straps from the 20mm collection of Milano Straps are compatible with this model.

What is the best strap for the IWC Da Vinci IW3754-03 in rose gold?

For the rose gold version, alligator is the historical choice: deep grain, ability to develop patina over time, and constructive density that supports the case weight without sagging. Cognac alligator creates chromatic continuity with the gold, while dark alligator (teak brown or black) offers elegant contrast. Alternatively, vegetable-tanned calfskin in warm tones (tobacco, caramel) breathes better in summer and ages beautifully.

How do I change the strap on my Da Vinci IW3754-03?

Position the watch with the lugs facing upward. Locate the spring bars that secure the strap to the lugs. Use a spring bar tool to gently press the lateral hook of the pin, releasing the tension. Remove the old strap, insert the new one by aligning the lug holes, press the pin until you hear the locking click. Verify that the pin is fully inserted on both sides.

Can I use an aftermarket strap on this IWC?

Yes, provided the strap is sized for 20 mm lug width. Handcrafted straps in alligator, calfskin or shell cordovan from Milano Straps are built with precise tolerances that guarantee perfect fit on the Da Vinci lugs. The important thing is to verify that the curve of the strap head adapts to the case geometry—Milano Straps straps for 20mm are designed for dress-sport cases of this diameter.

How long does a natural leather strap last on the Da Vinci?

Durability depends on frequency of use, tanning method, and environmental conditions. A superior quality vegetable-tanned alligator strap lasts 4-7 years in daily use; vegetable-tanned calfskin between 3-5 years. Continuous exposure to sun accelerates aging, while summer humidity reduces service life. Milano Straps straps come with an 18-month warranty against manufacturing defects. To maximize durability, rotate the strap (at least 2-3 straps in rotation) and store them in a dry environment away from direct light.

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