Strap for De Ville Trésor 39 Stainless Steel / MOP - Roman / Alligator

The lug width of the Omega Trésor 428.18.39.60.05.001 is 19 mm. This measurement is not standard in the strap market, where 18 mm and 20 mm predominate, so it is important to verify compatibility before purchase. To measure correctly, place the watch with the dial facing down and measure the distance between the inside of one lug and the inside of the other metal lug protruding from the case.

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.

To change the strap, use a spring bar tool. Position the watch with the case stable, insert the thin tip of the tool into the small hole of the lug, gently lift the lug from its seat and remove the old strap. After cleaning the area with a soft cloth, insert the new strap (19 mm), align the holes with the lugs and press the lug into the new position. Verify that the lug is fully inserted on both sides of the case.

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.

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.