Longines · La Grande Classique

Strap for La Grande Classique Quartz 24 Stick Guilloche

Takes 13 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width13 mm
Case diameter24 mm
ReferenceL4.209.4.73.6 (aka: L42094736)
FamilyLa Grande Classique
MovementLongines caliber L209 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

The La Grande Classique L4.209.4.73.6 (aka: L42094736), seen from the bench

The Longines La Grande Classique Quartz 24 Stick Guilloche model L4.209.4.73.6 features a 24mm stainless steel case with a quartz Longines L209 caliber movement. The watch includes a sapphire crystal and a minimalist dial with stick indices. The lug width measures 13mm, which determines compatibility with aftermarket straps. This compact case size positions it as an elegant wristwatch for refined aesthetics.

Frequently asked questions

What is the lug width of the Longines La Grande Classique L4.209.4.73.6?

The lug width is 13mm. This technical measurement is essential for aftermarket strap compatibility. To verify, measure the internal distance between the two lugs using a calliper or metal ruler. This constructive specification is proportioned to the 24mm case diameter to maintain the aesthetic harmony of the La Grande Classique collection.

What is the best strap for the Longines L4.209.4.73.6?

The choice depends on use and personal preference. For formal elegance, we recommend alligator in brown or shell cordovan, which develop authentic patina over time. For daily wear, vegetable-tanned calf leather in cognac tones offers versatility and durability. For casual occasions, a satin-finish rubber strap in brown or grey creates material contrast without overwhelming the minimalist case. The ideal strap must respect the 13mm lug width.

How do I correctly change the strap on the Longines L4.209.4.73.6?

Locate the lugs (two small metal pins on either side of the case). Use a spring bar tool to gently push the outer pin towards the dial, releasing one side of the lug. Repeat on the other side. Insert the new 13mm strap, ensuring the pin is fully seated in the slots. This operation requires care to avoid scratching the case back or lugs.

Which aftermarket strap do you recommend as compatible with this model?

The 13mm straps available on milanostraps.it are specifically selected for models like your La Grande Classique. We recommend quality leather constructed with 13mm-width lugs, in materials such as alligator, calf, shell cordovan, and rubber. All straps are customisable in length, stitching colour, and initials. The Casati Milano atelier also creates bespoke straps with personalised consultation.

How long does a leather strap last on the Longines L4.209.4.73.6?

A quality artisanal leather strap lasts 3–5 years with daily wear. Durability varies by material: alligator and shell cordovan, when vegetable-tanned, age beautifully, developing authentic patina. Classical calf requires attention to moisture. The Casati Milano atelier guarantees its straps for 18 months and offers periodic maintenance services to extend your strap's lifespan.

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