Strap for La Grande Classisique Quartz 24 Two Tone Rose / Roman

The lug width of the Longines La Grande Classique L4.209.1.91.7 is 13mm. This measurement represents the space between the two lugs where the strap is attached. You can verify this dimension using a digital calliper or by contacting our service team with a close-up photograph of the lugs.

Alligator crocodile leather in dark brown represents the supreme choice for this dress watch: its natural grain and subtle texture align perfectly with the minimalist geometry of the case. Alternatively, grained calf leather in deep burgundy or shell cordovan in black provide formal elegance and evolving patina over time. We recommend avoiding sports materials such as NATO or rubber, which are incongruous with the sartorial identity of the timepiece.

To change the strap, you require a specific tool (spring bar tool) to remove the spring bars that secure the strap to the lugs. Position the watch on a soft surface, gently insert the tool into the small hole adjacent to the spring bar, apply light upward pressure, and slide the strap out. The reverse process secures the new strap. If you are not experienced, we recommend entrusting the operation to our Casati Milano atelier.

Yes, the Longines La Grande Classique L4.209.1.91.7 accepts quality aftermarket straps with a 13mm lug width. Our artisanal straps are crafted from noble leathers (alligator, calf, shell cordovan) and are customisable in sizing, initials, and stitching thread colour. All models in our 13mm catalogue are certified compatible without mechanical adjustment.

A quality leather strap (alligator or calf) typically lasts 5–8 years with regular use and proper maintenance. Shell cordovan, owing to its superior fibre density, can exceed 10 years. Longevity depends on intensity of use, exposure to moisture, and periodic care. The Casati Milano atelier provides an 18-month guarantee on all custom straps and offers guidance on conservation to extend the useful life of your piece.