Jaeger-LeCoultre Calibre 938 Master Ultra Thin Reserve de Marche 1372501 Eggshell Beige Index Diamond Bezel Rose Gold Leather 39mm Automatic - BRAND NEW Jaeger-LeCoultre Calibre 938 Master Ultra Thin Reserve…

The Jaeger-LeCoultre Master Ultra Thin Réserve de Marche reference 1372501 represents one of the most refined expressions of haute horlogerie available in today's market. Conceived as the flagship slim dress collection of the storied Manufacture in Le Sentier, the Master Ultra Thin lineage traces its roots to Jaeger-LeCoultre's century-long obsession with miniaturising mechanical complexity without sacrificing elegance. The Réserve de Marche complication — a power-reserve indicator that shows at a glance how much energy remains in the mainspring — elevates this reference beyond a simple time-only piece, making it both a functional tool and a conversation-starting objet d'art.

The 39mm rose gold case strikes a balance that appeals equally to traditionalists who prize understated proportions and contemporary collectors who appreciate a watch that sits flush and slim beneath a dress shirt cuff. Rose gold lends warmth and depth to the overall palette, harmonising seamlessly with the eggshell beige enamel dial. That dial finish is among the most painstaking in watchmaking: enamel demands precise firing at high temperatures and any imperfection means starting over, which is why enamel dials remain a hallmark of true manufacture-level craft.

The factory diamond-set bezel transforms reference 1372501 into a genuinely luxurious piece without veering into ostentation. Jaeger-LeCoultre sources and sets these diamonds at the manufacture level, ensuring consistency of cut, clarity, and spacing that aftermarket stone-setting simply cannot replicate. The result is a frame of brilliance that catches light from every angle while keeping focus on the beautifully restrained dial beneath.

At the heart of the watch beats the in-house Calibre 938, Jaeger-LeCoultre's dedicated automatic movement engineered specifically for ultra-thin applications. The movement drives central hours, minutes, a small seconds, and the power-reserve indicator, demonstrating that mechanical complication and elegant slimness are not mutually exclusive goals. The automatic winding rotor replenishes the mainspring during normal wear, making this an effortless daily companion for the discriminating collector.

The supple leather strap completes a thoroughly considered package: it keeps the wrist feel light and the overall aesthetic dressy, while also being the most practical choice for a slender rose gold case that deserves to breathe against the skin rather than be locked inside a metal bracelet. Whether worn to a black-tie event or paired with tailored business attire, the 1372501 transitions with ease.

Bizak & Co. presents this Jaeger-LeCoultre Master Ultra Thin Réserve de Marche 1372501 in brand-new condition, allowing the next owner to enjoy it from its very first moment. Acquiring a new example of this reference directly through an established dealer like Bizak & Co. means confidence in authenticity, provenance, and access to our team's expertise for any questions before and after purchase. Browse our full Jaeger-LeCoultre inventory online at bizakandco.com or contact us directly to buy this reference today.