Strap for Prestige Gold 15 Oval Diamond

The lug width of the Longines Les Grandes Classiques L6.110.7.15.6 is 18mm. This dimension is critical for compatibility: straps must be ordered in exactly this size to ensure a perfect fit without lateral play. To verify it, use a digital calliper, positioning the tips between the two metal lugs protruding from the case sides.

For the L6.110.7.15.6, the ideal strap depends on intended use and personal style. Alligator in dark brown or black tones represents the conservative choice par excellence, enhancing the sophistication of the yellow gold case. Italian calf with vegetable tanning offers softer patina that ages visibly. Shell cordovan constitutes an extraordinary formal alternative with inherent precious lustre. For a sporty-elegant approach, a NATO cotton strap in navy blue or dark grey transforms the model into a versatile daily companion.

Strap replacement requires extracting the spring bars connecting the strap to the case. Use a dedicated spring bar tool to compress the internal spring, freeing the strap from the case flanks. Insert the new 18mm strap whilst keeping the bars in position, release the spring and verify locking. If unsure, the Casati Milano atelier offers strap change service with direct consultation.

Yes, provided it is compatible with the 18mm lug width. Artisanal straps online at milanostraps.it are available in this specific size, customisable in materials (alligator, calf, shell cordovan), colours, initials and stitching thread. Compatibility is guaranteed by respecting the lug width: any 18mm strap will fit correctly in the case bars without issue.

Leather strap durability depends on material and usage intensity. High-quality alligator with vegetable tanning can last 5-7 years of moderate daily use, developing increasingly fascinating patina. Italian calf guarantees 3-5 years before replacement. Shell cordovan, thanks to its intrinsic density, can exceed 7-8 years. All Casati Milano straps include 18-month warranty and can be partially replaced (toprail only) to significantly extend lifespan.