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IWC · Da Vinci

Strap for Da Vinci Perpetual Rattrapante Yellow Gold / Diamond / Silver / English / Bracelet

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

Lug width

19mm
19 mm strapsAll IWC
Lug width19 mm
Case diameter39 mm
ReferenceIW9255-03 (aka: IW925503)
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

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The Da Vinci IW9255-03 (aka: IW925503), seen from the bench

The IWC Da Vinci IW9255-03 is a 39mm yellow gold watch with a 19mm lug width, featuring the IWC 79251 caliber movement. This manual-winding mechanism operates at 4 Hz and integrates a rattrapante chronograph, perpetual calendar with year indicator, and complete timekeeping functions. The yellow gold case combines durability with tactile and sonic qualities characteristic of precious metals, while the sapphire case back displays the rare complexity of the movement. A refined timepiece rooted in Renaissance aesthetics yet oriented toward contemporary watchmaking.

Frequently asked questions

What is the lug width of the IWC Da Vinci IW9255-03?

The lug width of the IWC Da Vinci IW9255-03 is 19mm. This dimension represents the distance between the inner pins of the lugs and is the standard specification for 39mm-case watches. When ordering a compatible strap, ensure it is specifically constructed for 19mm to guarantee perfect fit and visual balance on the case.

Which strap material is recommended for the Da Vinci IW9255-03 in yellow gold?

Alligator leather represents the pinnacle choice for this timepiece: its natural grain and warm tones (cognac, tobacco) enhance the character of gold without competing visually. Alternatively, vegetable-tanned calf leather offers softness and develops patina parallel to the gold. Shell cordovan matures into extraordinary luminosity with time. High-quality rubber provides a modern solution for humid climates whilst maintaining elegance.

How do you change the strap on an IWC Da Vinci watch?

The strap is secured using spring bars (removable lugs) positioned horizontally in the case's lateral pins. Use a dedicated tool to press inward the spring bar, releasing the strap from the opposite side. Align the new strap's holes with the pins and gently release the spring bar into its housing. Verify secure anchoring before wearing the watch. If uncertain, consult a specialist.

Are aftermarket straps compatible with the IW9255-03?

Yes, any strap with a 19mm lug width is compatible with the Da Vinci IW9255-03. High-quality aftermarket straps—such as those handcrafted from alligator, calf, or cordovan leather—maintain the same construction standards as original IWC straps, with the possibility of personalisation in materials, colours, and finishes according to personal preference.

What is the average lifespan of a leather strap for watches like the Da Vinci?

A high-quality leather strap—alligator, calf, or shell cordovan—typically lasts 5-7 years with regular daily use, developing patina and character over time. Longevity depends on factors such as frequency of changes, moisture exposure, leather care, and intensity of use. Artisanal straps with 18-month guarantees offer protection against construction defects. With proper maintenance and seasonal rotation, it is possible to significantly extend lifespan.

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