Omega · De Ville
Strap for De Ville Prestige Co-Axial 39.5 Stainless Steel / Red Gold / Vintage Silver Silk / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the De Ville 424.20.40.20.02.003 (aka: 42420402002003)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The De Ville 424.20.40.20.02.003 (aka: 42420402002003), seen from the bench
Frequently asked questions
What is the correct lug width for the Omega De Ville 424.20.40.20.02.003?
The lug width of the De Ville 424.20.40.20.02.003 is 20mm. This measurement should be taken from the outside between the center of the upper hole and the center of the lower hole of the case. It is a rare specification that requires bespoke straps, not standard commercial alternatives.
Which strap material is best suited for a bicolor Omega De Ville with red gold and steel?
Black alligator crocodile represents the canonically elegant choice for the bicolor De Ville: the geometric grain of the reptile skin creates an aesthetic synergy with the red gold. Vegetable-tanned calf leather in cognac or warm brown tones is a more informal yet equally harmonious alternative. Avoid bordeaux, beige, or overly rigid shell cordovan straps.
How do you correctly change the strap on an Omega De Ville 424.20.40.20.02.003?
The attachments are of the standard double-hole type. Use a spring bar tool to remove the old attachments from the De Ville lugs. Insert the new 20mm strap into the attachments and position it firmly into the case lugs. Verify that the strap is centered and does not slip within the lugs. If the strap is too loose, consult a specialized atelier.
Is a 20mm aftermarket strap compatible with my De Ville 424.20.40.20.02.003?
Yes, but with caution. Many nominally 20mm aftermarket straps may have manufacturing tolerances that make them slightly narrower or wider. The safest solution is to order from specialized artisans who test compatibility before shipping. MilanoStraps offers 20mm straps pre-verified for this model.
How long does a leather strap typically last on a 39.50mm Omega De Ville?
A quality alligator or calf leather strap, worn regularly on a De Ville, has an average lifespan of 3-5 years. Sweat absorption, humidity variations, and natural wear shorten its life if the strap is not properly maintained (periodic cleaning, protection from direct sunlight). A bespoke strap from a specialized atelier, with carefully selected leather, can last 7-8 years if treated with care.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

