Strap for La Grande Classique Quartz 37 Yellow Gold

The lug width of this model is precisely 18mm. This measurement is determined by the spring bar that connects the two lugs of the case. To verify it accurately, use a digital caliper positioned on the spring bar: the distance must correspond to 18mm. It is important not to confuse lug width with the case diameter, which in this instance is 37mm.

For this model, straps in alligator, vegetable-tanned calf leather, vulcanised rubber, or NATO are well suited. Alligator enhances contemporary elegance with its regular grain pattern. Calf leather ages gracefully, developing visible patina over time. Vulcanised rubber creates sophisticated contrast when paired with yellow gold. NATO in linen is ideal for informal occasions. Your choice should be based on your real-world lifestyle and chromatic sensitivity towards the yellow gold case.

Strap replacement requires the use of a spring bar tool, a precision instrument that allows you to compress the spring bar and remove it from the lugs. Position the tool on the bar, apply gentle downward pressure, and pull the bar outward. Repeat the operation on the other end. Insert the spring bar into the new strap, aligning its ends with the lugs, then compress it again until it is securely positioned. If you are uncertain, consult a professional watchmaker or contact Casati Milano for dedicated assistance.

Yes, it is entirely possible to use aftermarket straps compatible with the 18mm lug width. Milanostraps.it offers a complete selection of artisanal 18mm straps customisable in length, initials, and stitching colour. These straps are crafted from superior quality leather and are compatible with any watch fitted with 18mm lugs. Always ensure that the lug width corresponds exactly before purchase.

A high-quality natural leather strap, subjected to regular use, has an average lifespan of 3–5 years. This estimate varies depending on frequency of use, ambient humidity, sun exposure, and applied care. Leather subjected to vegetable tanning ages gracefully, developing visible patina whilst maintaining structural integrity for longer. The 18-month guarantee offered by Casati Milano on artisanal straps provides initial coverage, but periodic maintenance—gentle cleaning, natural drying, and conditioning—significantly extends the strap's lifespan.