Omega
De Ville 4631.80.33— lug 20mm

The lug width of the Omega De Ville 4631.80.33 is 20 millimeters. This measurement represents the distance between the lugs that anchor the strap to the case. It is essential to verify this measurement before purchasing an aftermarket strap to ensure complete compatibility with the timepiece.

For a 750 yellow gold case, alligator leather represents the most formal choice, preferably in dark brown or black tones. Vegetable-tanned calf leather is the recommended tactile alternative, with a capacity for chromatic evolution over time that complements the natural patina of gold. Shell cordovan in cognac colorways creates an extraordinary visual dialogue with the precious metal.

Strap replacement is accomplished through removal of the spring bars that anchor the lugs to the case. Use a specialized tool (spring bar remover or small Phillips screwdriver) to push the bar from the inside toward the outside. Once the spring bar is removed, the previous strap detaches easily. Insert the new strap by aligning the holes with the lugs and reinsert the spring bar. This delicate operation requires precision to avoid scratching the gold.

Yes, it is absolutely possible and recommended. Artisanal straps in alligator, calf, or shell cordovan from specialized brands often offer construction quality superior to Omega OEM straps. It is essential to verify lug width compatibility (20 millimeters) and choose materials that respect the stylistic grammar of yellow gold—avoid rubber, NATO, and fabrics that would compromise the aesthetic identity of the De Ville.

Longevity depends on construction quality and material choice. A high-quality artisanal alligator or shell cordovan strap easily exceeds 5-7 years of daily wear. Vegetable-tanned calf leather requires more maintenance (periodic treatments with natural balms) but maintains functionality beyond 4 years. Stitching and the deployment clasp are critical elements: double hand-stitching guarantees superior durability compared to industrial stitching.