Longines · Les Grandes Classiques

Strap for Prestige Gold Cushion 18

Integrated attachment: measurements, the most common questions, and the way to a made-to-measure strap.

Lug width to be confirmed

On this Longines Les Grandes Classiques L4.230.7.88.6 the lug width doesn't convince me, and I don't want to give you a number I'm not sure about. Write to me on WhatsApp with the reference or a photo of the watch: I'll check it and tell you myself.

Case diameter18 mm
ReferenceL4.230.7.88.6 (aka: L42307886)
FamilyLes Grandes Classiques
MovementLongines caliber L963 Hours, Minutes | Date
CaseWhite 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 L4.230.7.88.6, seen from the bench

The Longines Les Grandes Classiques reference L4.230.7.88.6 features the L963 caliber with hour, minute, and date indications. The watch presents the essential lines typical of the brand's classic collection. The movement ensures basic functions with a mechanism for date display.

Frequently asked questions

Which strap is recommended for the Longines L4.230.7.88.6?

For the L4.230.7.88.6, an alligator strap in cognac brown or black is the optimal choice: the natural texture of crocodile complements the white gold case, emphasising the model's formal character. Alternatively, high-quality calf leather with vegetable tanning offers versatility and develops a natural patina over time. For more casual contexts, shell cordovan in burgundy or vulcanised rubber in black provide stylistic alternatives without compromising the watch's overall elegance.

How do I change the strap on my Longines L4.230.7.88.6?

To change the strap, you will need a spring bar removal tool. Position the watch with the dial facing downward. Insert the tip of the tool into the small lateral groove of one of the lugs, then gently push downward to release the internal spring. Repeat on the opposite side. Once the spring bars are removed, the old strap will slide away. To install the new strap, align the holes at the strap ends with the case lugs and reinsert the spring bars, ensuring they are fully engaged.

How long does a leather strap last on my Longines?

The lifespan of a leather strap depends on the material, frequency of use, and storage conditions. High-quality alligator or shell cordovan with vegetable tanning can last 5-7 years of regular wear, developing an attractive patina over time. Quality calf leather typically lasts 4-5 years. Constant exposure to sweat, humidity, and UV rays accelerates ageing: store the strap away from direct sunlight when not wearing the watch. MilanoStraps provides straps with an 18-month warranty, and the Casati Milano atelier offers personalised replacement and maintenance services.

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

The atelier's website: casatimilano.com