Strap for Master Collection Date 25.5 Stainless Steel - Yellow Gold / Silver / Bracelet

The lug width of the Longines Master Collection L2.128.5.78.7 is 13mm, a non-standard measurement. This specific dimension is common in vintage Longines models and persists in certain contemporary Master Collection references. To verify with precision, measure the internal space between the two lugs with a digital calliper.

Vegetable-tanned alligator in cognac or dark brown tone represents the optimal choice for this stainless steel and yellow gold two-tone watch. The Hornback grain texture complements the formal elegance of the case. For a more versatile profile, aged brown vegetable-tanned calf leather offers suppleness and natural patina development over time. Both are available in 13mm at milanostraps.it.

Remove the watch from your wrist and locate the spring bars (internal fastening pins) within the case lugs. Using a strap removal tool or small lever, press the pin inward and slide the old strap out of the lug attachment. Insert the new 13mm strap by aligning its hole with the pin and release gently until you hear the fastening click. Repeat on the opposite side.

Yes, any strap manufactured with internal 13mm attachment points is compatible. milanostraps.it offers a dedicated collection of 13mm straps in various materials (alligator, calf, NATO, rubber) that fit perfectly with the watch's spring bars. Always verify the measurement before ordering.

A vegetable-tanned leather strap (alligator or calf) has an average lifespan of 3–5 years with daily wear, provided regular maintenance: dry it after humidity exposure and condition it with leather balm every 6–12 months. Straps crafted at the Casati Milano atelier include an 18-month warranty against manufacturing defects.