Strap for La Grande Classique Tonneau 22 Stainless Steel

The lug width of the Longines La Grande Classique L4.205.4.87.2 is 20mm. This is the exact distance between the lateral attachment pins of the case. Any compatible strap must present a width of 20mm at the base to fit correctly into the lugs. You can verify this measurement using a digital calliper, measuring the space between the two metal pins visible when viewing the case from the dial side.

The best strap depends on usage: for formal and ceremonial wear, alligator with vegetable tanning in dark brown is the historical choice that respects the Art Deco heritage of the model. For daily-elegant wear, soft calfskin with protective sole offers versatility and comfort. Both materials, in 20mm width, are available online and customisable at Casati Milano.

The strap is changed by removing the lateral attachment pins: position the watch on a soft surface and use a pointed tool (a dedicated tool or small tubular key) to gently push the pin inward, sliding it out of the seat. Once the old strap is free, insert the new one by aligning the base (20mm) with the case holes and push the pin in the opposite direction until it stops with a click. The operation requires care to avoid scratching the stainless steel case.

Yes, the L4.205.4.87.2 is compatible with all 20mm lug width straps produced for this measurement. Milanostraps.it offers straps in alligator, calfskin, vegetable tanning, NATO and rubber, all adaptable to this reference with customisation options in lengths, embroidered initials and stitching thread to measure.

The lifespan of a leather strap depends on frequency of use and material. Alligator with vegetable tanning, if worn daily, maintains functionality and aesthetics for 3-4 years before requiring fold regeneration; calfskin, softer, ages in 2-3 years if subjected to intensive wear. Casati Milano straps include an 18-month warranty and can be regenerated or replaced at the atelier.