Strap for La Grande Classique Tonneau 30 Diamond

The lug width is 18 mm. This measurement, taken from the inside of one lug to the inside of the opposite lug, is specific to this collection and determines compatibility with straps and bracelets. Always verify the measurement with a digital calliper before ordering a replacement strap.

For this minimalist 29.70 mm case, soft alligator with regular grain is the classic choice; vegetable-tanned calf leather is ideal if you appreciate natural patina development; shell cordovan emphasises formal lustre. Tactical NATO straps and rubber are contemporary alternatives. The choice depends on your context of use: formal, everyday, or mixed.

Use a spring bar tool: position it beneath the lug pin, press gently upward to release the internal spring, and the pin will slide out. Repeat for the second pin. Insert the new pins through the new strap, reinsert them into the case lugs, and verify they are securely locked. This operation takes 2–3 minutes, even for beginners.

Yes, any strap with an 18 mm lug width is compatible. On milanostraps.it you will find ready-to-ship straps in various materials (alligator, calf, NATO, rubber). For complete personalisation (length, initials, leather selection, bespoke buckle), the Casati Milano atelier offers custom-made service with 18-month warranty.

Durability depends on material and frequency of wear. High-quality alligator, worn daily, lasts 3–5 years. Vegetable-tanned calf may last 2–4 years and improves with age. Shell cordovan, being more robust, reaches 5–7 years. Occasional wear or rotation with other straps significantly extends leather life. Regular maintenance—cleaning and occasional conditioning—is essential.