Jaeger-LeCoultre · Reverso

Strap for Reverso Classic Large Duoface Small Seconds Stainless Steel / Silver / Fagliano

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

Lug width20 mm
Case diameter28 mm
ReferenceQ3848423 (aka: 3848423)
FamilyReverso
MovementJaeger-LeCoultre caliber 854A/2 hours, minutes, Additional 12 hours Hand (adjustable), day / Night Indication
Year2024
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 Reverso Q3848423 (aka: 3848423)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Reverso Q3848423 (aka: 3848423), seen from the bench

The Jaeger-LeCoultre Reverso Classic Large Duoface Small Seconds Q3848423 (reference 3848423) is a 28.30 mm stainless steel watch with a reversible case design originating from 1931. It features the caliber 854A/2 manual movement and a dual time zone complication with a 12-hour subdial and day/night indicator on the main dial. The 20 mm lug width ensures balanced proportions between the compact case and the Art Deco design.

Frequently asked questions

What is the lug width of the Jaeger-LeCoultre Reverso Q3848423?

The Jaeger-LeCoultre Reverso Q3848423 features a lug width of 20 mm. This dimension is proportional to the compact 28.30 mm case and ensures the aesthetic and functional balance characteristic of the model. Always measure the distance between the two lugs (case extensions) to verify strap compatibility.

Which strap is best suited for the Reverso Q3848423?

For the Q3848423, we recommend supreme-quality alligator leather with vegetable tanning: its natural texture harmonises perfectly with Art Déco geometry. Hand-worked calf leather is a versatile and contemporary alternative. Shell cordovan is ideal for those seeking durability and evolving patina over time. NATO and rubber straps offer daily practicality for informal contexts.

How do you change the strap on a Jaeger-LeCoultre Reverso?

To change the Reverso strap, use a spring bar tool to compress the springs anchoring the strap to the lugs. Proceed with care: the reversible case is a sophisticated mechanism and must not be forced. If uncertain, consult a certified watchmaker or Casati Milano's service, where you can follow the crafting process in real time.

Is an aftermarket strap compatible with the Reverso Q3848423?

Yes, any 20 mm strap is mechanically compatible. However, we recommend choosing a bespoke, hand-crafted strap: this ensures the keeper (the section encircling the wrist) is proportioned correctly and the buckle or deployant integrates without aesthetic compromise. Avoid generic straps: the Q3848423 deserves thoughtful visual narrative.

How long does a leather strap last on the Reverso Q3848423?

Longevity depends on the material chosen. Quality alligator or calf leather, subjected to vegetable tanning, lasts 5-7 years under normal conditions (daily wear without prolonged water exposure or intense perspiration). Shell cordovan can last 7-10 years due to its superior resilience. Periodic maintenance (gentle cleaning, seasonal conditioning) significantly extends longevity. Casati Milano provides an 18-month warranty against manufacturing defects.

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