Strap for La Grande Classique Quartz 23 White Gold

The Longines La Grande Classique L4.191.6.72.2 features a lug width of exactly 12mm. This is a rare size in watchmaking, determined by the proportions of the 23mm case. Lug width is measured between the inner shoulders of the lugs, where the strap attaches. This narrow dimension maintains the visual balance characteristic of this ultra-thin dress watch.

The ideal strap for the L4.191.6.72.2 is premium alligator leather in neutral tones such as black, dark brown, or slate grey. The regular grain pattern of alligator leather complements the purity of the white gold case perfectly. Alternatively, soft calf leather or vegetable-tanned leather in tobacco hue offer elegance with a patina that evolves over time. NATO straps and rubber are not recommended, as they conflict with the formal nature of this model.

Strap replacement involves removing the spring bars (small metal pins that secure the strap to the lugs). Using a dedicated tool or small lever, gently compress the spring bar to release one end from the lug, then extract the pin. Repeat on the other side. To install a new strap, position the spring bar on the first lug, compress it, and secure the opposite end to the second lug. This operation requires care to avoid scratching the white gold case.

Yes, absolutely. Any strap with a 12mm lug width is compatible with the L4.191.6.72.2. High-quality aftermarket straps offer greater variety in materials, colours, and finishes compared to official Longines options. It is essential that the strap is constructed with premium leather and that the spring bars are made from robust stainless steel, matching the build quality of the watch itself.

A premium leather strap, such as alligator or first-grade calf leather, typically lasts between 3 and 5 years with moderate daily use. Longevity depends on factors such as frequency of wear, exposure to humidity and sunlight, and maintenance. A vegetable-tanned leather strap may last slightly less under heavy wear but develops a beautiful patina. The Casati Milano atelier provides straps with an 18-month warranty covering manufacturing defects.