Jaeger-LeCoultre
Master Ultra Thin 1362510— lug 20mm

The Jaeger-LeCoultre Master Ultra Thin 1362510 has a 20mm lug width. To verify on your own watch, measure with a caliper the internal distance between the two lugs at the point closest to the case. The replacement strap should taper to 18mm at the buckle height to respect the original proportions.

For a rose gold case with moonphase complication, the most suitable strap is alligator leather with a smooth belly in tobacco, cognac or burgundy tones. Box calf is the most formal alternative and develops a personal patina over time. In both cases, the thickness at the head must be modest so as not to alter the ultra-thin profile of the caliber 925AA.

The strap is replaced using a dedicated springbar tool and a fine-pointed tool (springbar tool). Given the delicacy of the rose gold case and the ultra-thin profile of the lugs, it is advisable to entrust the operation to a watchmaker or specialized atelier to avoid scratches on the polished surfaces. Casati Milano offers this service by appointment.

Yes, the reference 1362510 has a standard 20mm lug width, one of the most common sizes in high-end watchmaking. A selection of artisanal 20mm straps compatible with it is available on milanostraps.it, made in alligator, calf and other fine materials, with the possibility of ordering a bespoke strap through the Casati Milano atelier.

The durability of a leather strap depends on the quality of the tanning, care and frequency of use. A first-choice alligator or calf strap, periodically treated with specific products and alternated with other straps, can last 3 to 5 years while maintaining full structural integrity. Casati Milano straps are guaranteed for 18 months against manufacturing defects.