Strap for Elegant Collection 25.5 Automatic Stainless Steel / MOP / Strap

The lug width of the L4.309.4.87.2 is 13mm, measured internally between the two spring bar holes. This is a rare size standard, making it essential to verify compatibility before purchasing an aftermarket strap. Any measurement error would result in an incompatible strap.

For this model, we recommend straps in polished alligator or superior-quality calf leather, which enhance the understated elegance of the 25.50mm case. Black or deep brown alligator amplifies formality; vegetable-tanned calf offers a tactile and natural alternative. Silk NATO straps are ideal for those seeking daily versatility without sacrificing aesthetics.

The strap is changed using a spring bar tool to release the small springs beneath the lug holes. Insert the tool into the small slot on the underside of the lug pin, gently press until the pin clicks out, then remove the old strap. Repeat on the other side. Installing the new strap follows the reverse process. If unsure, entrust the task to a specialised atelier.

Any strap with an internal lug width (end link) of 13mm is compatible with the L4.309.4.87.2, regardless of brand. However, we recommend artisanal straps of superior quality that respect case proportions and ensure ethically-sourced leather. Alligator, calf, and vulcanised rubber straps with brushed steel fittings offer the best compromise between aesthetics, durability, and versatility.

A quality leather strap with vegetable tanning or alligator typically lasts 3–5 years with daily wear, provided regular maintenance is performed. Avoid prolonged exposure to water, direct UV rays, and excessive heat. Monthly cleaning with a soft damp cloth and conditioning with leather cream once or twice yearly extends its lifespan. Vulcanised rubber straps can last 7–10 years if stored in stable conditions.