Omega · De Ville

Strap for De Ville Prestige Co-Axial 36.5 Yellow Gold / Silver

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter37 mm
Reference4617.31.02 (aka: 46173102)
FamilyDe Ville
MovementOmega caliber 2500 hours, minutes, seconds | date | co-Axial escapement, chronometer
CaseYellow Gold

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the De Ville 4617.31.02 (aka: 46173102)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The De Ville 4617.31.02 (aka: 46173102), seen from the bench

The De Ville represents Omega's elegant line oriented towards classic city timepieces. It features the automatic Calibre 2500 with co-axial escapement and chronometer certification, equipped with hour, minute, second and date functions. The case presents a traditional design with a slim profile suitable for formal wear.

Frequently asked questions

What is the lug width of the Omega De Ville 4617.31.02?

The lug width of the De Ville ref. 4617.31.02 is exactly 20mm. It is measured from the inner left edge to the inner right edge of the opening between the two metal lugs using a digital caliper. This is an absolute specification of the model due to the lugs being integrated directly into the yellow gold case.

What is the best strap material for an Omega De Ville 4617.31.02?

For the De Ville in yellow gold, we primarily recommend bourbon alligator for lasting elegance (5-7 years of wear), vegetable-tanned calf leather to develop natural patina over time, or black shell cordovan for bold formal contrast. All these materials pair beautifully with yellow gold and maintain the aesthetic sobriety that the model requires.

How do I change the strap on the Omega De Ville 4617.31.02?

Strap replacement requires a specific tool to remove the spring bars from the integrated lugs. DIY is not recommended on a yellow gold watch: Casati Milano offers custom replacement service with personalized consultation and an 18-month guarantee on the new strap.

Can I use a standard 20mm strap on the De Ville 4617.31.02?

Yes, any strap with standard attachments compatible with the 20mm lug width can be fitted to your De Ville. Milano Straps offers an online collection of specialized 20mm straps customizable in leather, color and stitching thread, ready to ship.

How long does a leather strap last on a daily-worn watch?

A high-quality alligator or vegetable-tanned calf leather strap typically lasts 5-7 years with daily wear. Shell cordovan can extend durability up to 8 years thanks to its more compact structure. Longevity depends on care: avoid prolonged exposure to water, direct sunlight and extreme temperatures. Casati Milano provides an 18-month guarantee on every bespoke strap produced.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only