Strap for Saint-Imier Date 41

The lug width (or lug-to-lug distance) of the Longines Saint-Imier L2.766.5.72.0 is 20 mm, measured centre-to-centre between the upper and lower attachment holes on the case. This dimension reflects the classical Swiss standard and allows the use of artisanal straps with standard lugs. To verify precisely, measure directly between the attachments using a calliper or rigid ruler.

For the stainless steel and 18k rose gold model, we recommend an alligator strap with fine grain or vegetable-tanned calf leather in shades of brown, burgundy, or pearl grey. Alligator offers formal elegance and tactile softness, ideal for a rose gold deployant buckle. Vegetable-tanned calf develops narrative patina over time. For sporty use, a cotton NATO strap with tight weave represents the versatile alternative.

The replacement requires a spring bar tool or spring bar removal device. Insert the pointed end of the tool into the narrow hole of the upper lug attachment, release the spring pressure and remove the spring bar. Repeat for the lower lug. The new strap slides between the lugs: align the shoulders to the attachment holes and reinsert the spring bars with firm pressure until locked. If you are inexperienced, consult a professional watchmaker to avoid damage to the case.

Yes, all artisanal straps with 20 mm lug width are compatible with the Longines Saint-Imier L2.766.5.72.0. Ensure that the lug thickness is consistent with the original lugs (typically 2.5–3 mm for classical models). Milanostraps.it straps are handcrafted with premium leathers and offer an 18-month warranty on invoice.

A high-quality leather strap, properly maintained, lasts 3–5 years under moderate wearing conditions (daily wear, 4–5 days per week). Durability depends on exposure to moisture, heat, and the pulling force of the deployant buckle. Vegetable-tanned calf develops fascinating patina but wears faster than alligator. Avoid prolonged exposure to water, chlorine, and acidic perspiration to extend lifespan. Milanostraps.it straps offer an 18-month warranty against manufacturing defects.