Omega · Trésor
Strap for De Ville Trésor 36 Stainless Steel / MOP - Roman / Alligator
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Trésor 428.18.36.60.05.002 (aka: 42818366005002)
Selected for the 18 mm lug width
Hammered Calfskin Strap Light Blue€98
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
The Trésor 428.18.36.60.05.002 (aka: 42818366005002), seen from the bench
Frequently asked questions
What is the lug width of the Omega Trésor 428.18.36.60.05.002?
The lug width of the Omega Trésor 428.18.36.60.05.002 is 18mm. This dimension is rare in the contemporary watch landscape and requires straps specifically sized to avoid play or strain on the case lugs.
What is the best strap material for the Trésor 428.18.36.60.05.002?
Brown alligator or vegetable-tanned calf are optimal choices. Alligator offers pleasant texture and chromatic stability over time; vegetable-tanned calf ensures maximum grip and development of natural patina. For humid environments or sports use, shell cordovan is the absolute excellence.
How to change the strap on the Omega Trésor while maintaining precision?
Use a spring bar tool to compress the internal nipples located under the lug. Completely remove the nipple, then slide the old strap out of the case. Insert the new strap from both sides, verifying that the nipples lock correctly in their seats. Avoid forcing — an Omega case tolerates decisive movements but not violent ones.
Does the Trésor 428.18.36.60.05.002 accept quality aftermarket straps?
Yes, provided the lug width is exactly 18mm. Many quality manufacturers (Hirsch, Bullstrap, Italian artisans such as Casati Milano) offer custom straps for this dimension. Always verify that the internal passage is to tight tolerance — neither too wide nor too narrow — to guarantee absence of involuntary movement.
How long does a leather strap last on the Omega Trésor?
A quality leather strap (alligator, calf, shell cordovan) lasts 3-5 years with daily use. Longevity depends on ambient humidity, cleaning frequency, and material: shell cordovan resists longer; vegetable tanning on calf evolves more rapidly but remains functional. Regular maintenance (cleaning with damp cloth, quick drying) significantly extends 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

