Strap for De Ville Prestige Co-Axial 39.5 Yellow Gold / Enamel / 50th Anniversary

The lug width of reference 424.53.40.20.04.005 is 20mm. This parameter measures the distance between the two lugs on the case and determines which strap is compatible. To verify it, remove the current strap and measure with a ruler the internal space between the lugs: it must be exactly 20mm.

Cognac brown alligator is the most refined choice for the De Ville in yellow gold: the regular texture and fine grain naturally reflect the warmth of the case creating chromatic harmony. Alternatively, vegetable-tanned calf leather of fine quality (which develops patina over time) or red burgundy shell cordovan for special occasions.

The change is straightforward: use a spring bar tool (pin remover) or the tip of a pen to apply pressure between the case lug and the strap bar. Gently push the pin until the strap detaches on one side, then on the other. The new strap is inserted the same way, aligning the first bar passage first and sliding the pin until the second lug.

Yes, all artisanal straps made for 20mm lugs are compatible with this model. Online you will find a wide range of 20mm straps in alligator, calf, shell cordovan and rubber, available in different colors. The Casati Milano atelier also creates custom straps according to your aesthetic and construction preferences.

A quality leather strap (alligator, vegetable-tanned calf, shell cordovan) lasts on average 3-5 years with daily use, with possible extension to 6-7 years with regular maintenance. Durability depends on exposure to water, sweat, humidity and frequency of use. FKM rubber straps have superior durability (7-10 years). The Casati Milano atelier guarantees 18 months on its artisanal straps.