Strap for Master Collection Date 34 Stainless Steel - Pink Gold / MOP

The Longines Master Collection L2.357.5.89.7 features an 18mm lug width, a specific and non-standardised dimension. This width is calibrated to the proportions of the 34mm case and requires straps constructed specifically for this measurement. To verify strap compatibility, measure the internal width of the case lug using a digital calliper.

For the L2.357.5.89.7, the ideal strap is crafted from superior-quality alligator leather, whose elegantly marked grain synchronises perfectly with the rose mother-of-pearl dial. Alternatively, vegetable-tanned calf leather offers a patina that intensifies over time. For formal occasions, a cognac or dark brown alligator enhances the rose gold case without aesthetic compromise.

Strap replacement requires a specialised tool (spring bar tool) or spring bar remover. Position the case horizontally, insert the tool tip into the spring hole, gently compress and extract the spring bar. Repeat on the opposite side. This procedure requires no particular technical skill but must be performed carefully to avoid scratching the case.

Yes, it is possible to wear aftermarket straps of adequate construction quality, provided they are manufactured for the 18mm lug width. Milan Straps offers a collection of 18mm straps customisable in noble leathers (alligator, calf, shell cordovan) with artisanal finishes. The Casati Milano atelier provides bespoke straps with personal leather selection and direct updates.

The lifespan of a leather strap depends on tanning quality and intensity of use. An alligator or vegetable-tanned calf strap, worn daily, maintains structural integrity for 3-5 years. Under moderate use (occasional wear), longevity extends beyond 5 years. Natural ageing of the leather is a desirable process that contributes to the overall aesthetic of the watch, creating a unique patina over time.