Longines · Evidenza

Strap for Evidenza 19.6 Pink Gold

Takes 10 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width10 mm
Case diameter20 mm
ReferenceL2.175.8.71.5 (aka: L21758715)
FamilyEvidenza
MovementLongines caliber L178 Hours, Minutes, Small Seconds
CasePink Gold

Spring bar

Swiss Standard universal spring bars

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

The Evidenza L2.175.8.71.5 (aka: L21758715), seen from the bench

The Longines Evidenza L2.175.8.71.5 is a tonneau-shaped watch faithful to original Art Déco geometry from the 1920s. The case is crafted in pink gold with a 19.60 mm diameter, featuring a slightly convex bezel that creates visual movement. The lug width measures 10 mm, defining the interface between case and strap. Powered by the Longines caliber L178, an automatic movement with manual winding, the watch displays hours, minutes, and small seconds.

Frequently asked questions

What is the lug width of the Longines Evidenza L2.175.8.71.5?

The lug width is 10 mm, measured as the distance between the case attachments. This width is specific to the Evidenza tonneau collection and ensures a perfect fit without lateral play. Always measure the internal distance between the lugs with a digital calliper to avoid errors.

Which strap should I choose for the Longines Evidenza L2.175.8.71.5?

Black or brown alligator remains the most natural choice, given its fine texture that harmonizes with the domed bezel of the tonneau case. European calf leather with vegetable tanning represents an elegant alternative for those desiring a patina that evolves over time. Avoid industrial-grade rubber or excessively thick straps that would compromise the case proportions.

How do I change the strap on a Longines Evidenza?

Use a spring bar tool, inserting the flat tip into the gaps between the lug and case. Press gently downward to release the internal spring, then slide the lug out of the case attachments. Reverse the procedure with the new strap, ensuring the springs are properly positioned within the case holes.

Can I use quality aftermarket straps for my Longines?

Yes, but only straps calibrated to exactly 10 mm in width. A 10.5 mm strap would create friction against the sides of the tonneau case, compromising both aesthetics and mechanics. Always verify that the strap has been measured internally, not externally.

How long does a leather strap last on the Longines Evidenza?

A high-quality alligator or calf strap lasts 3-5 years with conscious use, depending on frequency of wear and exposure to moisture. Vegetable-tanned leather ages naturally, developing a patina that increases aesthetic value. Humidity and sweat accelerate ageing; protect it during winter 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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only