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

The lug width of the IWC Da Vinci IW3751-07 is 19 millimetres. This measurement is taken by positioning a calliper perpendicular between the inside of one lug and the inside of the opposite lug, excluding the case thickness. A 19mm strap is the only size compatible with this model.

For the IW3751-07 in 18-carat yellow gold, we recommend alligator with vegetable tanning in deep brown tones, or vegetable-tanned calf leather in beige or cream shades. Shell cordovan represents an absolute luxury alternative owing to its natural density and colour ageing that parallels the gold patina. Choice depends on usage: formal occasions favour structured leathers, casual wear permits more vivid tones such as indigo blue.

The strap is replaced by removing the spring bars that connect the strap to the case lugs. Use a dedicated spring bar tool to gently compress the bars and extract the old strap. Insert the new spring bars into the replacement strap, then position them into the case lug attachments. Verify that the strap is aligned symmetrically. If this procedure is beyond your capability, consult a specialised centre such as Casati Milano.

Yes, any strap with a 19mm lug width is compatible with the IW3751-07. However, we recommend selecting materials of elevated quality – alligator, calf leather, shell cordovan – to ensure longevity and aesthetic harmony with the watch's qualitative standard. An artisanally crafted aftermarket strap can surpass the original IWC strap in both durability and beauty.

A high-quality natural leather strap, with vegetable or shell cordovan tanning, lasts between 4 and 8 years with regular use (5–6 days per week) if properly maintained. Durability varies depending on environmental humidity, perspiration and cleaning frequency. Casati Milano straps include an 18-month warranty against manufacturing defects and undergo controlled aesthetic ageing, which constitutes merit rather than fault.