Strap for Master Collection Date 29 Diamond

The lug width of the Longines Master Collection L2.257.0.87.2 is 15mm. This non-standard measurement requires specialised suppliers who ensure precise mechanical tolerances. A correctly dimensioned strap provides perfect fit to the lugs without lateral play, preventing structural stress.

For the Master Collection L2.257.0.87.2, recommended materials include: alligator (maximum elegance, multi-year durability), vegetable-tanned calf (softness and evolved patina), shell cordovan (permanence and resistance), cotton NATO (summer versatility), and vulcanised rubber (daily practicality). Choice depends on intended occasion and desired aesthetics.

Strap replacement requires specialised tools: a kit with soft tips (typically plastic) to extract the fixing pins from the lugs. Position the watch on a soft pad, unscrew the old strap by removing the pins, then insert the new strap by threading the pins from the opposite side. We recommend having this procedure performed by a specialised atelier to avoid case damage.

Yes, it is possible to use aftermarket straps compatible with 15mm lug width. Milano Straps offers a curated selection of artisanal straps in alligator, calf, cordovan and technical materials, all dimensioned to respect the L2.257.0.87.2 specifications, with customisation options (sizing, initials, stitching thread).

Leather strap lifespan depends on material and usage. Alligator and cordovan guarantee 5-7 years with minimal wear and regular maintenance. Vegetable-tanned calf, more sensitive to humidity, benefits from rotation between at least two straps to extend life beyond 3-4 years. Vulcanised rubber maintains elasticity for 2-3 years, after which it tends to lose flexibility. Store straps in dry environments and rotate them seasonally to significantly extend efficiency.