Strap for Master Collection Date 36 Diamond

The lug width of the Longines Master Collection L2.518.0.87.6 is 19 millimetres. This measurement must be verified accurately before purchasing an aftermarket strap: measure the internal space between the case lugs to ensure exact compatibility.

The best strap depends on intended use. For classical elegance, French alligator with vegetable tanning or shell cordovan are authentic choices. For daily practicality, a matte vitello calf in mid-brown or black with an opaque deployante clasp offers reduced maintenance and comfort. Ballistic nylon NATO is a functional alternative for informal sporty contexts.

Remove the original strap using a dedicated tool or small flathead screwdriver to extract the spring bars from the lugs. Insert the bars into the new 19mm strap, aligning spaces correctly. Verify the strap is straight and the bars are fully seated in the lugs before wearing the watch. For deployante clasps, check the opening mechanism before use.

Yes, 19mm aftermarket straps are fully compatible with this model. Milanostraps.it offers a specialised selection of 19mm straps in various materials (alligator, vitello, shell cordovan, NATO, rubber) customisable for length, initials, and thread colour.

Durability depends on material and use. Vegetable-tanned alligator lasts 4-6 years before replacement, but develops a noble patina that enhances aesthetic value. Shell cordovan lasts 5-7 years with careful maintenance. Regenerated vitello lasts 2-3 years with intensive use. Ballistic nylon NATO lasts 8-10 years. Atelier Casati Milano offers 18-month warranty on bespoke straps.