Longines · Saint Imier

Strap for Saint-Imier Date 38.5

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter39 mm
ReferenceL2.766.5.52.3 (aka: L27665523)
FamilySaint Imier
MovementLongines caliber L619.2 Hours, Minutes, Seconds | Date
CasePink Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Saint Imier L2.766.5.52.3 (aka: L27665523)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Saint Imier L2.766.5.52.3 (aka: L27665523), seen from the bench

The Saint Imier is part of the Longines collection dedicated to the Swiss city where the manufacture was founded in 1832. The watch is equipped with the L619.2 caliber with hour, minute, second and date functions. The L2.766.5.52.3 reference features a classic three-dial configuration with calendar indication.

Frequently asked questions

What is the lug width of the Longines Saint Imier L2.766.5.52.3?

The Longines Saint Imier L2.766.5.52.3 features a lug width of 20 mm, which is the standard specification for this collection and many classical Swiss timepieces. To verify this measurement yourself, measure the distance between the two lugs (metal pins) from outer edge to outer edge; that figure in millimetres corresponds to the lug width required for strap selection.

Which strap pairs best with the Longines Saint Imier L2.766.5.52.3?

Given the two-tone case construction (stainless steel and 18k pink gold) of the L2.766.5.52.3, straps in alligator leather (black, dark brown, or cognac) or premium vegetable-tanned calf leather represent the most refined choices. Alligator enhances the colour contrast; vegetable-tanned calf develops a natural patina that complements the ageing of the gold. For casual wear, pearl grey calf or natural certified rubber offers practicality without aesthetic compromise.

How do I change the strap on my Longines Saint Imier L2.766.5.52.3?

The Saint Imier L2.766.5.52.3 uses pressure-fit lugs (or screw-in pins depending on variant). Procure a lug-removal tool of appropriate diameter. Position the watch on a soft surface, identify the insertion direction of the pin, and extract it gently by pressing the tool from the opposite side. Insert the new strap onto the first lug, then reinsert the pin with precise movements. If you lack experience, consult a trusted watchmaker or the Casati Milano atelier for professional strap changes.

Can I use an aftermarket-compatible strap on my Longines Saint Imier L2.766.5.52.3?

Yes, any strap with a 20 mm lug width is compatible with the L2.766.5.52.3. It is advisable to select premium materials (alligator, vegetable-tanned calf, shell cordovan) to maintain the aesthetic and qualitative balance of the watch. Straps offered by milanostraps.it, customisable in length and stitch colour, are engineered to guarantee comfort and precision in attachment.

How long does a leather strap last on a watch like the Longines Saint Imier L2.766.5.52.3?

Longevity depends on frequency of wear, material quality, and environmental conditions. A premium calf or alligator strap, worn daily, retains structural integrity for 3–5 years; with occasional use it may exceed 7 years. Vegetable-tanned leather ages elegantly, developing a natural patina. Casati Milano guarantees 18 months on its bespoke straps and recommends rotating between multiple straps and regular maintenance with leather-specific balms to extend service life.

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