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

The lug width of the IWC Da Vinci IW9255-01 is 19 millimetres. This measurement was carefully calibrated by IWC to maintain balanced proportions between the 39mm case and the strap, ensuring secure attachment without the need for adapters. Correct measurement is performed by placing a metal ruler perpendicular to the lug attachment points.

For an IWC Da Vinci IW9255-01 in yellow gold, alligator leather represents the most refined and conservative choice, thanks to its regular vertical grain that does not visually compete with the case. Alligator develops a patina over time that complements the natural ageing of gold. Vegetable-tanned calf leather is a distinguished alternative, whilst shell cordovan offers superior elastic properties for those seeking structural resilience. Rubber straps are not recommended, as they create conceptual disharmony with the precious case material.

To change the strap, you must remove the spring bars positioned at the lateral attachment points of the case. Use a specialised tool—typically a thin steel lever—to compress the spring bar and slide it downwards, releasing the mechanism. Once the original strap is removed, align the new strap with the case and push the spring bar until it clicks into its final position. We recommend performing this operation on a soft, clean surface to avoid scratching.

Yes, provided the strap is specified for the 19mm lug width. Milanostraps.it offers a curated selection of 19mm straps ready for dispatch, customisable in length, initials, and thread colour. For 100% compatibility assurance with bespoke material selection, the Casati Milano atelier manufactures custom straps with direct consultation and an 18-month warranty.

The lifespan of a leather strap depends on material quality, usage patterns, and maintenance. High-quality alligator, worn daily under normal conditions, typically lasts 4–6 years before replacement becomes necessary. Vegetable-tanned calf leather tends to endure slightly less (3–5 years), whilst shell cordovan, owing to its structural density, can exceed 6–7 years. Periodic rotation with alternative straps significantly extends the life of each strap, as leather requires rest periods to regain elasticity.