Strap for Souveraine Chronomètre Optimum 42 Red Gold

The lug width of the FP Journe Souveraine 1510 CO 42 RG is 20 millimetres. This measurement refers to the space between the two pins that attach the strap to the case lugs. It is an international standard that ensures full compatibility with quality artisanal straps produced by independent European manufacturers.

For the 1510 CO 42 RG model, an alligator strap with vegetable tanning is recommended, as it enhances the natural patina of rose gold. Alternatively, vegetable-tanned calf leather is versatile and develops a pleasing aged character. For sports use, FKM rubber offers water resistance and heat durability whilst maintaining elevated craftsmanship.

Strap replacement is performed by extracting the pins that connect the strap to the case. Use a spring bar tool or watch-specific instruments: insert the flat tip into the small slot on the pin, gently lift and the pin will retract, allowing removal of the old strap. Reinsert the new strap by aligning the holes with the case lugs and push the pin until it clicks into place.

Yes, numerous European artisanal makers produce compatible 20-millimetre straps. Quality-focused choices are brands specialising in vegetable tanning and hand-finishing. Verify that the strap is constructed for case thickness similar to the Journe (approximately 11–13 mm) to avoid excessive play on the wrist.

A vegetable-tanned leather strap lasts between 3 and 5 years with moderate daily use. Longevity depends on exposure to moisture, perspiration and UV rays. Alligator or shell cordovan straps, thanks to denser fibres, achieve 6–8 years. Natural rubber has similar lifespan, while synthetic FKM can exceed 10 years. Rotating between straps extends the life of each.