Strap for Master Collection Date 36 Pink Gold Diamond

The lug width of the Longines Master Collection L2.518.8.77.3 is 19 mm. This precise measurement is essential for selecting compatible watch straps. It should be measured with a digital calliper, positioning it between the two lugs of the case. Incorrect measurement is the most common cause of strap incompatibility and unwanted play on the wrist.

For the Longines Master Collection L2.518.8.77.3 in rose gold, the most appropriate straps are dark brown alligator, deep red shell cordovan, or black vegetable-tanned calf leather. These materials dialogue with the warm tone of rose gold, creating visual harmony. For sporty contexts, a black FKM rubber or a dark grey NATO fabric maintains classical elegance with everyday versatility.

To change the strap, you must remove the spring bars that connect the strap to the case lugs. Use a specialised tool or fine needle to press the small button on the inner spring, causing it to release from the case. Then insert the new 19 mm strap into the lugs, ensuring the spring bars lock fully into place. If purchasing from milanostraps.it, strap mounting can also be arranged at Casati Milano atelier.

Yes, any strap with a 19 mm lug width is compatible with the Longines Master Collection L2.518.8.77.3, provided the width is exact. Avoid approximations (18 or 20 mm) which would cause play or mounting difficulties. milanostraps.it offers a wide selection of certified compatible 19 mm straps, from premium leathers to technical fabrics, with custom tailoring options available at Casati Milano.

The lifespan of a leather strap depends on material and usage. High-quality alligator or shell cordovan, worn daily, maintains structural performance for 3–5 years whilst developing a patina that increases aesthetic value. Vegetable-tanned calf leather, being more delicate, lasts approximately 2–3 years with intensive use. Casati Milano atelier provides an 18-month warranty on all bespoke straps, covering manufacturing defects. Regular maintenance (cleaning and treatment with natural oils) significantly extends the usable life of the piece.