Longines · La Grande Classique

Strap for La Grande Classique Quartz 24 Two Tone Gold Stick

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
ReferenceL4.209.2.42.7 (aka: L42092427)
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 L4.209.2.42.7 (aka: L42092427), seen from the bench

The La Grande Classique line represents Longines' collection of essential timepieces characterized by clean and sober lines. It is powered by the L209 quartz caliber with hour and minute indications. The case features 13mm lugs for the strap.

Frequently asked questions

What is the lug width of the Longines La Grande Classique L4.209.2.42.7?

The lug width of the Longines La Grande Classique L4.209.2.42.7 is 13 millimetres. This measurement refers to the distance between the case lugs where the strap attaches. It is a relatively compact space that requires a precisely crafted strap to ensure structural stability and proper load distribution across the lugs.

Which strap is recommended for the Longines La Grande Classique L4.209.2.42.7?

For the La Grande Classique L4.209.2.42.7, straps in alligator or vegetable-tanned calf leather are ideal, reflecting the minimalist elegance of the stainless steel case. Vegetable-tanned alligator develops a natural patina that perfectly complements the case's ageing. Japanese shell cordovan is excellent for those seeking durability and a lustrous finish that matures over time. Avoid NATO straps or rubber, which would be aesthetically incongruous with the refined proportions of this model.

How do I change the strap on my Longines La Grande Classique L4.209.2.42.7?

The strap on the Longines L4.209.2.42.7 is changed by extracting the spring bars that pass through the case lugs. You need a spring bar tool (a specialised implement with rubber balls at each end) to compress the spring mechanism and release the old strap. The process is reversible and does not require professional intervention, provided you work carefully to avoid scratching the case. For added safety, you may always consult a qualified watchmaker.

Can I use an aftermarket compatible strap on this Longines model?

Yes, you may use aftermarket straps provided they respect the exact 13-millimetre lug width specification. A strap manufactured to correct specifications ensures structural stability and does not compromise case integrity. Milano Straps offers handcrafted 13mm straps that are customisable and compatible with the L4.209.2.42.7 model, produced from superior-quality leather.

How long does a leather strap last on a watch like the Longines La Grande Classique?

Strap longevity depends on material and usage patterns. An alligator or vegetable-tanned calf strap, if exposed to moderate sunlight and worn regularly (approximately 5–7 days per week), maintains acceptable functionality and aesthetics for 3–4 years. Japanese shell cordovan can endure 5–6 years thanks to leather density. Rotating between multiple straps and periodic cleaning extends durability significantly. Standard warranty from quality suppliers is 18 months.

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