Strap for Master Collection 29 Two Tone Rose / Brown

The lug width (ansa misura) of the Longines Master Collection L2.257.5.67.7 is 15mm. This non-standard dimension requires specifically measured straps, verified between the two lugs of the case. A digital calliper allows verification that the strap inserts without lateral play.

For the L2.257.5.67.7, straps in alligator, vegetable-tanned calf or shell cordovan are recommended. Alligator enhances the constructive rationality of the design with its fine grain, whilst vegetable-tanned calf offers versatility and natural patina over time. Shell cordovan represents the most durable solution.

Strap replacement is achieved via the Longines lugs: remove the original strap by levering the ends of the spring bars with a spring bar tool, insert the new strap aligning its width to the lugs, and verify that the bars lock securely in position. If in doubt, contact an authorised Longines service centre.

Yes, provided the lug width is exactly 15mm and the strap is crafted by qualified artisans. Milano Straps offers straps compatible with this specific dimension, made from fine leather and fully customisable. The quality of the aftermarket strap must reflect the excellence of the timepiece.

A quality leather strap, such as alligator or vegetable-tanned calf, maintains structural integrity between 5 and 10 years based on daily use and maintenance. Shell cordovan, due to its superior tactile and material density, can exceed 10-15 years. Longevity increases if the strap is not continuously exposed to moisture and extreme temperatures. Casati Milano provides an 18-month warranty.