Longines · Saint Imier

Strap for Saint Imier Moonphase

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

Lug width20 mm
Case diameter44 mm
ReferenceL2.764.4.73.0 (aka: L27644730)
FamilySaint Imier
MovementLongines caliber L707.2 Additional 24 Hour Hand (adjustable), Day / Night Indication, Hours, Minutes, Small Seconds | Date | Moonphase
CaseStainless 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 L2.764.4.73.0 (aka: L27644730)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Saint Imier L2.764.4.73.0 (aka: L27644730), seen from the bench

The Longines Saint-Imier is equipped with the L707.2 caliber featuring hour, minute, small seconds and adjustable GMT hand functions. The movement includes day/night indication, date and moon phases. The L2.764.4.73.0 reference presents multiple complications in a traditional configuration.

Frequently asked questions

What is the lug width of the Longines Saint Imier L2.764.4.73.0?

The lug width of the Longines Saint-Imier L2.764.4.73.0 is 20mm. This technical specification indicates the space between the case lugs—the area intended to accommodate the strap. Measure carefully with a calliper between the inner lugs before ordering any aftermarket strap.

Which strap is most suitable for the Longines Saint Imier L2.764.4.73.0?

For the Saint-Imier L2.764.4.73.0, vegetable-tanned alligator is the most coherent choice: natural texture and patina development resonate perfectly with the steel case. Alternatively, vegetable-tanned calf leather offers suppleness and durability, whilst a cotton NATO ensures sporting practicality without sacrificing elegance.

How do you change the strap on the Longines Saint Imier L2.764.4.73.0?

Strap replacement requires a dedicated spring bar tool. Position the tool in the slot between the lug and strap, apply gentle pressure to compress the internal spring of the lug, then extract the old strap. Insert the end of the new strap into the lug, release tool pressure and verify that the spring closes correctly. Repeat on the opposite side of the case.

Does the Longines Saint Imier L2.764.4.73.0 accept compatible aftermarket straps?

Yes, the Saint-Imier L2.764.4.73.0 accepts any strap with a 20mm lug width. Milano Straps offers artisanal straps in alligator, calf, shell cordovan and textiles, all compatible. The Casati Milano atelier additionally provides fully custom straps with personal choice of leather.

How long does a leather strap last on the Longines Saint Imier L2.764.4.73.0?

Durability depends on material and frequency of use. Alligator or calf in vegetable tanning lasts 3-5 years in daily wear before replacement or repair. Shell cordovan, being more robust, can last 5-7 years. A cotton NATO resists 4-6 years. Naturally developed patina does not indicate deterioration but aesthetic enrichment.

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