Strap for La Grande Classique Tonneau 35

The lug width is 20 millimetres. This measurement is characteristic of this model, positioning itself between the conventional feminine standard (18mm) and masculine standard (22mm). The measurement is taken with a digital calliper, measuring perpendicularly the distance between the case lugs at the point of entry on the main body.

For this 35mm model, we recommend alligator for formal elegance, shell cordovan for those seeking durability and patina development over time, calf leather for a more informal approach, and vegetable-tanned leather for sustainability. The choice depends on usage: black or cognac alligator enhances the satin case's sobriety, whilst cordovan develops aesthetic complexity with the natural ageing of the steel.

The change requires a specific tool to extract the lug pins from the case. Proceed with the wrist rested on a soft cloth to avoid scratches. Insert the new strap by aligning the holes with the lugs, ensuring the pins are completely inserted on both sides. If inexperienced, contact a specialised atelier such as Casati Milano to prevent damage to the case.

Yes, any strap with a 20mm lug width is physically compatible. However, aesthetic compatibility depends on construction quality and material choice. We recommend straps from specialised suppliers that guarantee refined finishes and precise tolerances, avoiding poor-quality synthetic materials that compromise the watch's elegance.

Durability varies depending on material and usage. Shell cordovan, with minimal maintenance, lasts 5-7 years with regular rotation. Alligator and calf require protection against humidity and offer longevity of 3-5 years. Vegetable-tanned leather, though durable, is sensitive to perspiration and requires periodic maintenance. Factors such as climate, frequency of use and leather treatment significantly influence these parameters.