Strap for Master Collection Date 36 Stainless Steel

The lug width of the Longines Master Collection L2.518.4.51.3 is 19 mm. This dimension is the standard for many classical watches with 36 mm cases and allows a wide range of aftermarket straps to be fitted whilst maintaining harmonious proportions between case and strap.

For the Master Collection L2.518.4.51.3, the most appropriate strap is made from natural alligator leather, particularly in dark brown, cognac or black tones. Alligator leather enhances the classical and formal nature of the watch. Valid alternatives include shell cordovan for those seeking visible character, or vegetable-tanned calf leather for those prioritising immediate comfort.

The strap is changed using a dedicated spring bar removal tool to remove the spring bars (pins) that secure the strap to the case lugs. Position the watch on a soft surface, locate the spring bars on both sides, and gently use the spring bar tool to slide the bars outwards until the strap separates from the case. The reverse procedure allows the new strap to be fitted.

Yes, any strap with a lug width of 19 mm is compatible with the Longines Master Collection L2.518.4.51.3. It is essential to verify that the lug width measures exactly 19 mm using a digital calliper or ruler, as even small variations can result in instability or prevent fitting.

The lifespan of a leather strap depends on the material, type of tanning and frequency of wear. A quality handcrafted alligator leather strap typically lasts 3-5 years in regular use. Shell cordovan tends to last longer due to its natural compactness (5-7 years), whilst vegetable-tanned calf leather generally offers a lifespan of 2-4 years. Proper maintenance and periodic rotation with other straps significantly extends service life.