Strap for De Ville Prestige Co-Axial 36.8 Stainless Steel / Vintage Silver / Bracelet

The lug width of the De Ville Ref. 424.10.37.20.02.002 is 19 mm. This precise dimension represents the available space between the two lugs of the tonneau case where the strap spring bar inserts. It is not advisable to order 18 mm straps (too tight, reduces mobility) or 20 mm straps (require forcing). Only 19 mm guarantees the ideal fit with original Omega lugs.

Alligator (fine grain, elegant patina) is the archetypal and formal choice. Calf leather, especially vegetable-tanned, offers tactical minimalism with accelerated patina over time. For a more versatile approach, polyamide NATO straps offer chromatic versatility while maintaining proportionality. FKM rubber works for casual summer occasions without compromising elegance. Shell cordovan, though spectacular in color, requires careful humidity maintenance.

The change requires extraction of the spring bars using a dedicated tool: position the bar in the appropriate lateral recess of the lug and press gently downward to compress the spring. The old strap releases easily. Insert the new strap by aligning the passants with the lugs, then reposition the spring bars ensuring they click into the seat. If you do not have the specific tool, entrust the task to an Omega service center or specialized craftsman to avoid damaging the case.

Yes, provided it respects the 19 mm lug width. Many artisanal straps, both from specialized brands and custom ateliers such as Casati Milano, are constructed for this specific measurement. Always verify that the supplier indicates 19 mm as the standard; some universal straps might require adaptation to the tonneau lugs. Straps offered by Milano Straps for the 19 mm size are tested for compatibility with the De Ville.

Durability depends on material, frequency of use, and maintenance. A quality alligator strap, worn daily in formal contexts (controlled humidity, no prolonged direct sun exposure), typically lasts 2–4 years before requiring replacement. Classic calf leather wears slightly faster (18–36 months). Shell cordovan, if kept dry and regularly nourished with appropriate creams, can last 4–6 years. The 18-month warranty offered by Casati Milano on custom straps ensures protection during the critical period of leather break-in.