Strap for Perpetual 1908 39 White Gold / White

The Rolex Perpetual 1908 52509-0006 features a lug width (ansa) of 20 millimetres. This measurement represents the distance between the inner shoulders of the case's lug slots. To verify compatibility with an aftermarket strap, measure the lug hole with a ruler: if the diameter is exactly 20mm, the strap is suitable for wearing.

For a white gold 18-carat case, dark grey or black alligator represents the formal choice par excellence: the natural scales create a dynamic texture that dialogues with the case's classical proportions. An equally elegant alternative is vegetable-tanned calf leather, which develops rich patina over time. For daily versatility, black calf leather with a satin-finished steel buckle offers practicality whilst maintaining aesthetic coherence.

Strap replacement requires a specific tool: a spring bar tool. Insert the flat tip of the tool into the small lateral hole of the lug to push the elastic pin; the strap disengages easily. Repeat on the other side. To install the new strap, align the holes and push the pin until you feel a slight click. We recommend performing this operation on a soft surface (silicone mat) to prevent scratches on the white gold case.

Yes, provided the lug width is exactly 20mm. Any artisanal strap with this dimension couples perfectly with the case's pins. Casati Milano straps and those available on milanostraps.it in the 20mm collection are certified compatible with the Rolex Perpetual 1908 52509-0006 and guarantee finishes coherent with Rolex standards.

Durability depends on the material, usage, and maintenance. A well-maintained alligator or shell cordovan strap can last 5–7 years of daily wear. Vegetable-tanned calf leather typically lasts 4–5 years, developing characteristic patina in the process. Casati Milano straps are guaranteed for 18 months against manufacturing defects. Periodic replacement is recommended when visible signs of wear appear on the stitching or buckle.