Strap for De Ville Small Seconds Master Chronometer Stainless Steel / Turquoise

The lug width of the 434.13.41.20.10.001 is 19mm. This Omega construction standard determines the strap width at the base where it passes through the lugs. Verify this dimension by measuring the space between the lug pins: 19mm is non-negotiable for perfect compatibility.

For formal elegance without compromise, alligator or crocodile with tight grain remains superior. For daily wear and visible aging, vegetable-tanned calf (English or German tannage) creates fascinating patina over the years. Shell cordovan offers rare natural shine; grey or Navy NATO fabric straps guarantee summer practicality while maintaining authority.

The De Ville uses standard lugs with straight pins (spring bar). Remove the old strap by pushing the pin inward with a thin tool (a spring bar tool) until the pin retracts. Extract the old strap, insert the new one by aligning the lug hole, and release the pin until it clicks into position with a slight "click".

Any strap with a 19mm lug width is compatible. Look for high-quality artisanal leather: alligator, crocodile, calf, shell cordovan, suede, and NATO fabrics with 19mm lugs will ensure precise fit and durability. Avoid generic straps from non-specialized suppliers; lug finishing must be accurate to avoid damaging the case lugs.

A high-quality artisanal leather strap lasts 3-5 years with daily wear, depending on tannage and maintenance. Vegetable-tanned leather ages well and develops patina; aniline leathers require periodic protection with specific creams. Casati Milano straps include an 18-month warranty against manufacturing defects and abnormal wear.