Omega · De Ville
Strap for De Ville Prestige Co-Axial 39.5 Stainless Steel / Vintage Black / 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 424.10.40.20.01.002 (aka: 42410402001002)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Hammered Calfskin Strap Light Blue€98
Vintage Olive Green Calf Leather Watch Strap€80
The De Ville 424.10.40.20.01.002 (aka: 42410402001002), seen from the bench
Frequently asked questions
What is the lug width of the Omega De Ville 424.10.40.20.01.002?
The lug width of the Omega De Ville 424.10.40.20.01.002 is 20 millimetres. This measurement is the distance between the two lugs and is crucial for strap compatibility. To measure it correctly, use a digital calliper inserted perpendicularly between the lugs, reading at the innermost point where the strap rests.
Which strap pairs best with the 424.10.40.20.01.002?
A black alligator strap in traditional tanning remains a timeless choice. For those preferring aesthetic warmth, structured calf in vegetable tanning with natural patina emphasises the dressy character while developing chromatic evolution over time. Burgundy shell cordovan is a bolder option, while black Formula 1 rubber provides versatility without compromising the proportion of the 39.50 millimetre case.
How do you change the strap on an Omega De Ville?
The Omega De Ville 424.10.40.20.01.002 features spring bars. Use a spring bar tool to gently push inward on the spring bar lever, thus releasing the strap from the case. Repeat on the other side. To fit the new strap, align the passing holes with the spring bars and push until you hear a click. Never force: the holes are precisely calibrated for 20 millimetres.
Is a 20mm aftermarket strap compatible with this Omega?
Yes, any strap with a 20 millimetre lug width is compatible. However, the original Omega features specific spring bars: verify that the aftermarket strap has passing holes compatible with the 1.80mm diameter and 20mm width standard. Bespoke artisanal straps guarantee millimetre-perfect fit, unlike mass-market options.
How long does a leather strap last on a watch like this?
A full-grain leather strap, in vegetable tanning or premium alligator, typically lasts 2–3 years in daily use. Factors affecting durability include frequency of wear, moisture exposure, skin perspiration, and stitching quality. A shell cordovan strap, thanks to its thickness (1.2–1.4mm), can reach 4–5 years. Maintenance—quick drying after perspiration, storage in a dry place—significantly extends useful life.
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

