Longines · La Grande Classique

Strap for Longines La Grande Classique L4.766.7.58.4

The La Grande Classique Quartz 37 White Gold Diamond Black takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Not sure about the right strap, or can't find your watch?Message me on WhatsApp
Lug width16 mm
Case diameter39 mm
ReferenceL4.766.7.58.4 (aka: L47667584)
FamilyLa Grande Classique
MovementLongines caliber L420 Hours, Minutes

Spring bar

Swiss Standard universal spring bars

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

What I'm asked about the Longines La Grande Classique L4.766.7.58.4

What strap size does the Longines La Grande Classique L4.766.7.58.4 take?

The Longines La Grande Classique L4.766.7.58.4 needs 16 mm between the lugs, usually 14 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Longines La Grande Classique L4.766.7.58.4 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Longines La Grande Classique L4.766.7.58.4?

Yes, in 16 mm leather. On a 39 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.

Which strap do you recommend for the Longines La Grande Classique L4.766.7.58.4?

A thin 16 mm alligator. You'll find it ready in the 16 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

Straps for the La Grande Classique L4.766.7.58.4

Selected for the 16 mm lug width

All 16 mm straps →

The La Grande Classique L4.766.7.58.4, seen from the bench

The Longines La Grande Classique L4.766.7.58.4 is a minimalist reinterpretation of Swiss watchmaking heritage, launched in 2010 as part of the collection's revival drawing inspiration from 1930s icons. The 39mm stainless steel 316L case, 7.4mm thick, combines English sobriety with Swiss precision. The L420 manual-wind caliber powers this timepiece with regulated oscillation frequency meeting certified chronometric standards. The 16mm lug width complements the conservative case proportions while maintaining visual balance.

Frequently asked questions

Which type of strap is most suitable for the Longines La Grande Classique L4.766.7.58.4?

For the L4.766.7.58.4, we recommend alligator leather with vegetable tanning as the first choice: its natural geometric grain harmonises perfectly with the steel case and silvered dial, maintaining the timepiece's minimalist character. Noble alternatives include English calf leather (for formal versatility) and shell cordovan (for those seeking patina and longevity). A NATO strap in cotton offers daily practicality whilst preserving the aesthetic authority of the model.

Is an aftermarket 16mm strap compatible with the Longines La Grande Classique L4.766.7.58.4?

Yes, any strap manufactured to the 16mm lug width specification is technically compatible with the L4.766.7.58.4. However, constructive compatibility does not automatically guarantee aesthetic harmony: a poorly executed strap or one badly proportioned at the shoulders (the transition zone toward the wrist) may compromise the timepiece's silhouette. Artisanal Milan-made straps are calibrated specifically for vintage and classical models, ensuring proportions and comfort superior to industrial products.

How long does a leather strap last on the Longines La Grande Classique L4.766.7.58.4?

The lifespan of a leather strap depends on material quality, frequency of use and maintenance. An alligator or shell cordovan with vegetable tanning, worn regularly (5-6 days per week), maintains structural integrity for 4-6 years before replacement is needed. A classical English calf strap typically lasts 3-5 years. Prolonged exposure to humidity, direct heat and sunlight accelerates ageing. A cotton NATO strap offers superior longevity (7-10 years) due to fibre resilience. Basic maintenance (monthly cleaning with a lightly soaped damp cloth) significantly extends longevity.

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.

Request an appointment →

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

The atelier's website: casatimilano.com