Identified by reference 1362511, this replica ultra thin master 39mm represents the core of Jaeger-LeCoultre’s dress watch philosophy: a round case held to the thinnest possible profile. At 39mm the case diameter sits in the contemporary sweet spot for dress watches, large enough to read comfortably but restrained enough to disappear under a cuff. The Ultra-Thin Master line occupies a distinct position within the broader Master collection, where slimness is the primary engineering constraint rather than an afterthought. Every design decision in this reference, from the movement architecture to the crystal profile, serves the goal of minimizing case height.

Build Details

• Reference: 1362511
• Case diameter: 39mm
• Case material: stainless steel
• Profile: ultra-thin construction
• Crystal: sapphire, low-profile
• Movement: automatic, slim caliber
• Functions: hours, minutes
• Strap: leather with pin buckle

The 1362511 maintains a two-hand layout, which is not a constraint but a deliberate choice. Removing the seconds hand allows the movement to use a thinner mainplate, and every fraction of a millimeter matters when the selling point is case thinness.

What Collectors Notice

Ultra-thin watches reveal their quality through how they sit on the wrist rather than how they look on a dial photograph. The 1362511 should feel like a heavy coin rather than a bulky instrument, with the weight distributed evenly across the caseback surface. Jaeger-LeCoultre has produced ultra-thin calibers since the 1907 Calibre 145, and the engineering lineage is visible in how confidently this 39mm case maintains its slim proportions without feeling fragile. The 1368480 reference offers a different dial treatment within the same Ultra-Thin Master family. Both belong to the full Ultra-Thin Master collection, which ranges from time-only models to moon phase and perpetual calendar complications built on the same slim foundations.

This vs Other Versions

Within the Ultra-Thin Master range, the 1362511 sits at the purist end of the spectrum. No date window, no subdials, no complications to interrupt the dial surface. References with moon phase or reserve de marche indicators add visual interest but also add case height. This replica ultra thin master 39mm chooses restraint over complication, which positions it as the cleanest expression of what the Ultra-Thin Master concept was designed to achieve.