Strap for La Grande Classique Quartz 37 Yellow

The lug width of this model is 20 mm. This measurement is taken externally between the two lugs of the case at their midpoint. A common mistake is to measure diagonally or near the attachment points: correct procedure requires a calliper or rigid ruler positioned perpendicularly to the lugs. A 20 mm strap will ensure precise fit with margins of 1–2 mm per side.

Alligator leather in vegetable tanning represents the most elegant choice for this model: the natural texture of the skin creates a refined visual contrast with the geometric lines of the case. Shell cordovan constitutes a valuable alternative, developing over time a brown-mahogany patina highly sought after by collectors. For those preferring more discreet options, vegetable-tanned calf offers fine texture and soft draping, particularly suited to formal business contexts.

Changing the strap on this watch requires extraction of the spring bars from the case lugs. Using an appropriate tool (a spring bar tool or carefully a knife tip), one slightly compresses the internal spring of the lug and extracts the end from its housing on the case. Once both lugs are freed, the old strap is removed and the new one positioned at the same attachment points. The operation requires delicacy to avoid scratching the case.

All straps with 20 mm lug width are compatible with this model. Compatibility depends exclusively on lug width, not on the watch brand. Milanostraps offers a complete selection of 20 mm straps in alligator, shell cordovan, calf, and synthetic materials, customisable in size, initials, and thread colour. The 18-month warranty from Casati Milano covers all artisanal items.

The durability of a leather strap depends on intensity of use and material quality. A high-quality alligator or shell cordovan, subject to moderate daily use, maintains functional characteristics for 4–7 years before replacement becomes necessary. Natural leather develops creasing due to exposure to salt, chlorine, humidity fluctuations, and mechanical wear. Regular maintenance (cleaning, rapid drying, storage in a dry environment) significantly extends longevity. A strap removed and stored away from sunlight retains original properties for decades.