Louis Erard · Excellence

Strap for Excellence Petite Seconde 39 Lapis Lazulli

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
Reference34238AA35.BVA133
FamilyExcellence
MovementSellita caliber SW261-1 b Hours, Minutes, Small Seconds
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 Excellence 34238AA35.BVA133

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Excellence 34238AA35.BVA133, seen from the bench

The Louis Erard Excellence features the Sellita SW261-1 caliber with hour, minute and small seconds indications. The model has standard 20mm lugs. The reference 34238AA35.BVA133 is part of the Excellence collection of the Swiss brand.

Frequently asked questions

What is the lug width of the Louis Erard Excellence 34238AA35.BVA133?

The lug width of this model is 20mm, a specification that requires straps with compatible width. This dimension represents the ideal standard for a 39mm case, ensuring visual balance and comfortable daily wear.

Which strap should I choose for the Louis Erard Excellence 34238AA35.BVA133?

We recommend genuine alligator straps for a timeless classical look, vegetable-tanned calf leather for those desiring a patina that evolves naturally over time, or cotton NATO straps for a more contemporary approach. FKM rubber remains the most practical choice for intensive daily use.

How do I change the strap on the Louis Erard Excellence 34238AA35.BVA133?

Strap replacement requires a precision tool (spring bar tool) to compress the lateral pins that secure the strap to the lugs. Position the watch on a stable surface, insert the tool into the spaces on the pins, compress gently and remove the previous strap. Install the new strap by reversing the procedure. If inexperienced, we recommend entrusting the operation to a professional.

Which aftermarket strap is compatible with the Louis Erard Excellence 34238AA35.BVA133?

All standard straps with 20mm lug width are compatible with this model. It is essential to verify that the strap thickness—typically between 3.5mm and 5mm—allows easy passage through the lugs without forcing. We recommend consulting the technical specifications of the chosen strap before purchase.

How long does a leather strap last on the Louis Erard Excellence 34238AA35.BVA133?

A high-quality leather strap with vegetable tanning and artisanal construction maintains optimal functionality for 5-7 years of daily use, thanks to the natural ability of the material to adapt to the wrist. Longevity increases if the strap is rotated with others. Proper maintenance—drying after moisture exposure, occasional nourishing cream treatments—significantly extends durability.

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.

Request an appointment →

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