Longines · Les Grandes Classiques

Strap for Prestige Gold 21.8 Quartz

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter22 mm
ReferenceL6.108.7.27.6 (aka: L61087276)
FamilyLes Grandes Classiques
MovementLongines caliber L963 Hours, Minutes | Date
CaseYellow Gold

Spring bar

Swiss Standard universal spring bars

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

The Les Grandes Classiques L6.108.7.27.6 (aka: L61087276), seen from the bench

The Longines Les Grandes Classiques L6.108.7.27.6 is an iconic dress watch from the Saint-Imier manufacture, powered by the Longines L963 quartz caliber. The 21.80mm yellow gold case maintains refined proportions typical of 1950s–60s timepieces, while the 18mm lug width accommodates elegant straps without oversizing. The dial features essential functions—hours, minutes, date—with a sapphire crystal and anti-reflective coating, preserving aesthetic harmony and readability for daily formal wear.

Frequently asked questions

What is the lug width of the Longines Les Grandes Classiques L6.108.7.27.6?

The lug width is 18mm, a reference standard for elegant timepieces of medium proportions. This measurement is critical for compatibility: any strap you wish to mount must be exactly 18mm wide to fit the lugs without play or excessive resistance.

What is the best strap for the Longines Les Grandes Classiques?

The best strap depends on usage and personal preference. For formal elegance and long-term aesthetic development, dark brown alligator is the reference choice, as it develops a patina that naturally complements the gold case. Vegetable-tanned calf leather suits those preferring artisanal character and natural evolution over time. Shell cordovan offers rarity and superior construction quality with natural brilliance.

How do I change the strap on the Longines Les Grandes Classiques L6.108.7.27.6?

To change the strap, you will need a spring bar tool. Remove the pins from both sides of the case by applying slight downward and lateral pressure, then extract the original strap. Position the new strap by aligning the holes with the pins and push them into place until you feel the locking click. Verify that both sides are completely secured before wearing the watch.

Can I use an aftermarket compatible strap with this model?

Yes, you can use aftermarket compatible straps provided they have an 18mm lug width. Online at milanostraps.it you'll find a selection of 18mm straps ready for shipment in various materials (alligator, calf, shell cordovan, NATO). Always verify that the strap is specifically compatible with elegant 21.80mm watches to maintain proportional harmony.

How long does a leather strap last before replacement?

The lifespan of a leather strap depends on frequency of use and material. High-quality alligator can last 5-8 years with regular daily use, developing a fascinating patina. Standard calf typically lasts 3-5 years. Shell cordovan, thanks to its resistant fibrous structure, can exceed 10 years. Natural vegetable tanning wears more visibly but develops accelerated character, ideal for those who appreciate conscious ageing.

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