Strap for De Ville Prestige Co-Axial 39.5 Power Reserve Stainless Steel / Red Gold / Vintage Silver Silk

The lug width of the Omega De Ville ref. 424.23.40.21.02.001 is 20 mm. This measurement is specific to this model and represents the distance between the inner poles of the integrated lugs on the case. All straps must be compatible with this measurement to ensure precise fit and correct stitching to the lugs.

The ideal strap for the De Ville 424.23.40.21.02.001 is vegetable-tanned alligator (black, brown, burgundy) for maximum formality, or full-grain calf (optical black, grey, navy blue) for elegant everyday wear. Shell cordovan ages magnificently and echoes the gold of the case. For informal contexts, technical elastomers offer practicality. Consult Casati Milano if you desire a bespoke strap with personally selected leather.

Changing the strap on the De Ville 424.23.40.21.02.001 requires a specific tool (spring bar tool) to remove the micro-lugs that hold the strap to the lugs. Position the tool in the small lateral recesses, apply gentle pressure to release the internal spring, and the strap will slide off. The operation requires patience and steady hands: if you are not confident, the Casati Milano atelier performs the change free of charge on new straps ordered from them.

Yes, you will find numerous aftermarket straps online compatible with 20 mm lug width. However, quality varies significantly. MilanoStraps offers a curated selection of 20 mm straps in alligator, calf, shell cordovan and elastomers, customizable in length, color and stitch point. For a complete bespoke experience with follow-up and 18-month warranty, Casati Milano creates custom straps after personal consultation.

A quality leather strap on a De Ville 424.23.40.21.02.001 lasts an average of 2-4 years with daily use, depending on exposure to moisture, direct sunlight and sweat. Vegetable-tanned alligator and shell cordovan age elegantly and can last over 5 years developing desirable patina. Calf has a shorter cycle (2-3 years) but maintains initial softness. Casati Milano guarantees 18 months on their straps and offers regeneration services for worn leathers.