Longines · La Grande Classique

Strap for La Grande Classique Automatic 38 PVD Gold / White - Roman / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter38 mm
ReferenceL4.918.2.11.7
FamilyLa Grande Classique
MovementLongines caliber L591 Hours, Minutes
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the La Grande Classique L4.918.2.11.7

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The La Grande Classique L4.918.2.11.7, seen from the bench

The Longines La Grande Classique L4.918.2.11.7 is a 38 mm stainless steel automatic watch embodying 185 years of Swiss watchmaking heritage from Saint-Imier. It features the Longines L591 automatic caliber with 64-hour power reserve, applied indices, luminous hands, and a minimalist dial available in white lacquer and other finishes. The 316L stainless steel case is water-resistant to 30 meters. The 20 mm lug width is essential for strap compatibility and allows access to a wide range of artisanal solutions for strap replacement.

Frequently asked questions

What is the lug width of the Longines La Grande Classique L4.918.2.11.7?

The lug width is 20 millimetres. This measurement is critical for strap compatibility: even a half-millimetre error creates unwanted tension and compromises leather wear. To verify compatibility, measure precisely the space between the lugs where the spring bars exit the case.

What is the best strap for the Longines La Grande Classique?

The ideal strap for this classical model must respect the minimalist case design. Genuine alligator with natural grain is the most elegant choice; shell cordovan offers unique colour depth and a patina that evolves over time; vegetable-tanned calf represents the highest expression of Italian craftsmanship; a military NATO reinvents the piece in contemporary style. The choice depends on intended use and personal taste.

How do you change the strap on the Longines La Grande Classique L4.918.2.11.7?

The strap is secured by spring bars that slide transversely through the lugs. Use a dedicated tool or thin flathead screwdriver: push the bar towards the opposite side until it exits the lug, then remove the old strap. Insert the new strap by aligning the holes with the lugs and reintroduce the spring bar. Ensure the bar clicks firmly in position on both sides.

Is there an aftermarket strap compatible with this model?

Yes, any strap with a 20-millimetre lug width is compatible. The milanostraps.it online catalogue offers handcrafted straps in alligator, shell cordovan, calf, and fabrics, all customisable in size, initials, and stitching colour. The Casati Milano atelier also provides made-to-measure straps with personal consultation and 18-month guarantee.

How long does a leather strap last on this watch?

Durability depends on material and use. Vegetable-tanned calf lasts 4-6 years with daily wear; shell cordovan, being more robust, reaches 7-10 years; natural alligator 5-8 years. Deterioration is not a defect but an expression of material authenticity. With proper maintenance (water protection, moderate sun exposure, periodic cleaning) longevity increases significantly. Casati Milano straps include an 18-month guarantee on stitching.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only