Strap for Clous de Paris Power Reserve

The Longines Heritage L2.703.4.16.3 features a lug width of 22 millimetres. This measurement is specific and determined by the case's architectural proportions. To verify it precisely, use a caliper or thin ruler positioned perpendicularly between the internal points of the lugs. Any deviation from 22mm indicates an inauthentic timepiece.

For this Heritage model, European alligator leather represents the optimal choice: the natural texture of the scales harmonises perfectly with the case's sculpted proportions. Alligator develops a patina over time that parallels the steel's natural ageing. Vegetable-tanned calf leather is the most versatile alternative, offering softness and comfort with a consistent grain. Shell cordovan is the most demanding choice, with superior density and lustre that reveals itself progressively.

The strap is secured to the lugs via spring bars. To remove it: use a small tool (such as a needle mounted on a holder) to extract the spring bar from one end. Repeat on the opposite side. Align the new strap with the lug holes and reinsert the spring bars until you feel the locking click. Ensure the strap is symmetrical relative to the case.

Yes, you can use any strap with a lug width of 22 millimetres. Compatible straps on milanostraps.it are specifically engineered for this width and available in numerous materials: alligator, calf, shell cordovan, and technical rubber. Milano Straps also offers personalisation services (sizing, initials, stitch colour) and Casati Milano atelier creates bespoke straps with an 18-month warranty.

Leather strap longevity depends on material and treatment: high-quality European vegetable-tanned alligator lasts between 5 and 8 years of moderate daily use, developing a natural patina. Calf leather offers similar durability, typically 4-7 years. Shell cordovan, thanks to its superior density, can exceed 10 years. Factors such as humidity, sun exposure, usage frequency, and maintenance significantly impact lifespan. Casati Milano's 18-month warranty covers manufacturing defects.