Patek Philippe
Calatrava 5119G-001— lug 19mm

The Patek Philippe Calatrava 5119G-001 features a lug width of 19 millimetres. This dimension is standard for Calatrava models with a 36mm diameter and represents a harmonious proportion between the case and the strap attachment. Measuring accurately means determining the internal width of the seat where the lug sits, from wall to wall, excluding the strap thickness itself.

For a timepiece of this calibre, alligator represents the historically and aesthetically most appropriate choice: leather with natural geometric grain, fine venation and absence of artificial stamping. Alligator in dark brown or black tones with matte finish pairs perfectly with the white gold case. Alternatively, vegetable-tanned calf offers suppleness and the ability to develop natural patina over time, whilst shell cordovan satisfies collectors seeking uncompromised density and lustre.

Strap replacement is achieved by removing the lugs from the case. Using a dedicated spring bar tool, gentle pressure is applied to the internal spring of the lug to disengage it from the seat. It is important not to force excessively to avoid scratching the white gold. Once the original lugs are extracted, the new strap is inserted in the same manner, ensuring that the lugs are fully anchored and the strap adheres perfectly to the case.

Any artisanal strap with a lug width of 19 millimetres is compatible. At Casati Milano you will find exclusive selections in alligator, calf, shell cordovan and NATO, all constructed bespoke to ensure optimal comfort and aesthetics. Online at milanostraps.it, 19mm-compatible straps are available with the possibility of customising leather type, finish and buckle.

A high-quality artisanal strap in alligator or calf typically lasts 3–5 years with daily use, developing natural patina that enhances its aesthetics. Shell cordovan, thanks to its density, can exceed 10 years. Lifespan varies based on exposure to moisture, perspiration and frequency of use. Periodic maintenance—gentle cleaning and application of natural balms—significantly prolongs the life of the strap and preserves its original beauty.