Omega · Trésor
Strap for De Ville Trésor 36 Sedna Gold / Brown Roman / Fabric
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Trésor 428.58.36.60.13.001 (aka: 42858366013001), seen from the bench
Frequently asked questions
What is the lug width of the Omega Trésor 428.58.36.60.13.001?
The lug width of the Omega Trésor 36 ref. 428.58.36.60.13.001 is 18 millimetres. This measurement determines compatibility with aftermarket straps and represents the standard construction specification for this model. To verify it, measure the internal space between the two lugs (the metal spring bars) of the case.
Which strap do you recommend for the Trésor 36 in Sedna Gold?
For Sedna Gold we primarily recommend alligator in cognac or dark brown tones, which enhances the warmth of the gold alloy and develops a noble patina over time. Excellent alternatives are shell cordovan for those seeking construction density and characteristic aging, or smooth calf leather for those preferring aesthetic balance and formal versatility.
How do you change the strap on an Omega Trésor?
The strap is replaced via the spring bars (or pins) that connect the lugs to the case. You will need a specific tool called a 'spring bar removal tool' or you can visit a professional watchmaker. Milanostraps advises having the operation performed by experienced hands if you lack expertise: the risk of scratching the case is significant and a small mistake can compromise the integrity of the movement.
Is the strap I purchased online compatible with my Trésor 428.58.36.60.13.001?
Yes, provided the strap is certified for 18 millimetre lug width. All straps in the 18mm collection of Milanostraps are compatible with the Trésor. We recommend verifying the technical specifications of the individual item before purchase and contacting customer service for any construction questions.
How long does a leather strap last on a daily-wear watch like the Trésor?
Durability varies depending on construction quality and material. A professional craftsman's alligator or shell cordovan strap typically lasts 4-6 years with regular daily use, developing a characteristic patina over time. Calf leather is slightly more delicate (3-4 years). Milanostraps offers an 18-month warranty on all Casati Milano straps, covering construction defects. The <a href="/pages/termine-glossario/deployante">deployante</a> (enclosed buckle) protects the strap from accelerated wear compared to open solutions.
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

