Strap for La Grande Classique Quartz 24 Stainless Steel / Grey - Diamond / Bracelet

The lug width of the Longines La Grande Classique L4.209.4.74.6 is 13mm, a specific measurement that falls outside standard industry dimensions. This specification was chosen by Longines' designer to maintain perfect proportions on the 24mm case, ensuring visual harmony between the watch body and strap. To verify the measurement, remove the original strap and measure the distance between the two lug bars: it should be exactly 13mm.

For the L4.209.4.74.6, we recommend high-quality alligator leather, which with its regular grain and smooth surface respects the watch's minimalist aesthetics. Alternatively, vegetable-tanned calf leather offers a patina that ages naturally over time, or shell cordovan for those who appreciate greater intrinsic lustre. Avoid coarse materials or pronounced textures: the watch requires a strap with delicate weave that does not compete visually with the dial's simplicity.

Strap replacement involves removing the spring bars from the case lugs. Using a dedicated tool or the rounded tip of a blade, gently push the spring towards the centre of the bar until it yields, extracting the bar completely. Repeat on both sides of the case. Insert the new bars into the prepared holes of the new strap, ensuring the bars are perfectly aligned before they snap into position. Verify that the strap sits symmetrically and without misalignment before wearing the watch.

Yes, aftermarket straps can be used provided they are specifically manufactured for the 13mm lug width. Milano Straps offers a selection of artisanal straps compatible with this dimension, crafted from premium materials such as alligator, vegetable-tanned calf, and cordovan. Before purchase, always verify that the strap is designated for watches with 13mm lug width, as even minimal 1mm deviations can compromise both aesthetic and functional fit to the case.

Leather strap longevity depends on material quality and intensity of use. High-quality alligator may last 5–7 years with regular wear and proper care; vegetable-tanned calf tends to deteriorate faster (3–5 years) in humid conditions, though it develops a fascinating patina; shell cordovan ranks among the most durable (7–10 years) owing to its intrinsic density. Basic care—avoiding prolonged water exposure, protecting from excessive heat, periodic cleaning with soft cloth—significantly extends strap lifespan. Milano Straps guarantees its straps for 18 months.