Strap for Excellence Petite Seconde 39 Malachite

The lug width of the Louis Erard Excellence 34238AA39.BVA136 is 20mm, measured from interior to interior between the two lateral lugs of the case. This parameter is non-negotiable for selecting compatible straps: any different width would result in visible gaps between strap and lugs.

We recommend a strap in dark brown alligator or cognac vitello leather with vegetable tanning. Alligator emphasises the constructivist elegance of the satin-brushed case; vegetable-tanned vitello develops natural patina over time, dialoguing with the Swiss sober aesthetic of the movement. Both maintain esteemed coherence with the watchmaking philosophy.

Remove the watch from your wrist. Locate the external passant—a small metal pin fixing the strap to the case lugs (typically a spring bar). Using a dedicated spring bar tool or remover, extract the pin from the old strap. Insert the new 20mm strap, ensuring the inner edges align with the lugs. Reinsert the spring bar, tightening gently until mechanical lock engages.

Yes, provided the lug width is exactly 20mm and the strap width is proportionate to the 39mm case. Leather straps (alligator, vitello), NATO fabric, or rubber are compatible options. Verify the vendor's technical specification: it must clearly state "compatible 20mm". Improvised accommodations or adjustments compromise aesthetic fit.

A quality leather strap (alligator or vegetable-tanned vitello) lasts 4–6 years under ordinary daily wear. Variables include wrist perspiration, sun exposure, and maintenance discipline. Leather wears visibly at flex points and the buckle. Longevity extends through simple care: dry the strap after excess perspiration, shield from direct heat, condition occasionally with light vegetable oils. After 3–4 years, visible patina signals natural aging, not deterioration.