Strap for Da Vinci Tourbillon Leonardo Yellow Gold / German

The lug width of the IWC Da Vinci IW3752-13 is 19 millimetres. This measurement represents the perpendicular distance between the two lugs—the metal appendices that attach the strap to the case—and is the fundamental parameter for selecting compatible straps. The 19mm specification is exclusive to this model and reflects IWC's construction philosophy for this generation of Da Vinci watches.

For a yellow gold watch of this calibre, genuine alligator leather is the primary choice: its ordered grain structure creates a luminous contrast with the gold, amplifying the metal's chromatic depth. Shell cordovan is an even more refined alternative, developing an amber patina over time that harmonises naturally with the gold's ageing. For those prioritising sustainability, vegetable-tanned calf leather maintains formal elegance without ethical compromise.

Strap replacement involves removing the spring bars—the cylindrical pins that connect the strap to the watch lugs. Using a dedicated tool (available from jewellers and specialist ateliers), gently compress the spring bars to release the existing strap. Next, align the new strap with the lugs and insert the spring bars until they lock into position. This is a straightforward operation but requires care; we recommend professional guidance the first time.

Absolutely. A high-quality aftermarket strap with a compatible 19mm lug width is not only fully functional but often offers superior materials and finishing compared to IWC's standard offerings. Specialist ateliers like Casati Milano create bespoke straps using premium hides—alligator, shell cordovan, vegetable-tanned calf—that enhance the watch beyond commercial propositions.

Longevity depends on frequency of use and leather type. High-quality alligator or shell cordovan, with proper care (water protection, avoiding extreme creases), delivers 5–7 years of daily wear before replacement becomes necessary. Calf leather is slightly more delicate, with a useful life of 3–5 years. The stitching—a critical component—may require reinforcement after 4–6 years of regular wear. Casati Milano provides an 18-month warranty on bespoke straps, covering manufacturing defects within this timeframe.