Omega · Trésor

Strap for Omega Trésor 428.18.39.60.05.001

The De Ville Trésor 39 Stainless Steel / MOP - Roman / Alligator takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width19 mm
Case diameter39 mm
Reference428.18.39.60.05.001 (aka: 42818396005001)
FamilyTrésor
MovementOmega caliber 4061 Hours, Minutes
Year2019
CaseStainless Steel

Recommended spring bar

Spring bars Omega Speedmaster Seamaster 19mm

Technical match for lug width and diameter · lug 19 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Trésor 428.18.39.60.05.001

Selected for the 19 mm lug width

All 19 mm straps →

What I'm asked about the Omega Trésor 428.18.39.60.05.001

What strap size does the Omega Trésor 428.18.39.60.05.001 take?

The Omega Trésor 428.18.39.60.05.001 needs 19 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Omega Trésor 428.18.39.60.05.001 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Omega Trésor 428.18.39.60.05.001?

Yes, in 19 mm leather. On a 39 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.

Which strap do you recommend for the Omega Trésor 428.18.39.60.05.001?

A thin 19 mm alligator. You'll find it ready in the 19 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

The Trésor 428.18.39.60.05.001, seen from the bench

The Omega De Ville Trésor 428.18.39.60.05.001 is a 39 mm stainless steel watch featuring a Co-Axial caliber 4061 movement certified by the Geneva Chronometer Observatory. The sunburst blue dial is protected by sapphire crystal, and the watch offers 60 meters water resistance with a transparent caseback. It features a 19 mm lug width.

Frequently asked questions

Which leather strap is most suitable for the Omega Trésor 428.18.39.60.05.001?

For the Trésor 428.18.39.60.05.001, we recommend alligator in vegetable tanning (chocolate brown or black) or shell cordovan. Alligator with regular grain and natural patina is perfect for the understated style of the sunburst dial, while shell cordovan offers a natural structure that molds to the wrist over time. Both paired with contrasting stitching enhance the watch's manufacturing quality.

Can I use an aftermarket 20 mm strap on my Omega Trésor 428.18.39.60.05.001?

No. A 20 mm strap is not compatible with the 428.18.39.60.05.001, which requires 19 mm lugs. Using a 20 mm would create excessive space between the strap keeper and the lug, causing instability and the risk of the strap slipping during wear. It is essential to respect the correct lug width, even if less common on the market.

How long does a leather strap last on the Trésor 428.18.39.60.05.001?

Durability depends on the tanning and individual wear rate. Quality vegetable-tanned alligator typically lasts 3-5 years with daily use, then begins to show cracks due to constant flexing. Shell cordovan is more durable (5-7 years) thanks to its natural structural density, although it gradually thins. Exposure to sweat, moisture and sunlight accelerates aging. Casati Milano provides an 18-month warranty on artisanal straps, covering manufacturing defects.

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

The atelier's website: casatimilano.com