Strap for Rolex Day-Date 36 1825

The Rolex Day-Date 36 ref. 1825 has a lug width of 20 mm. This measurement remained consistent throughout the entire production run of the reference during the 1960s and 1970s and applies to all dial and bezel variants available on this model.

For an 18-carat solid gold case such as that of the Day-Date 36 1825, a vegetable-tanned alligator strap is the most aesthetically coherent choice: the scale texture complements the bezel's finishing, and the patina developed over time enhances the dial. Alternatively, polished box calf leather offers a more understated yet equally formal option.

The strap on the Day-Date 36 1825 is replaced by removing the spring bars using a dedicated spring bar tool or a flat-blade screwdriver. Given the delicacy of the solid gold case, it is strongly recommended to use nylon-tipped tools to avoid scratching the lugs. If in doubt, entrust the operation to a watchmaker or a specialist atelier.

Yes. Aftermarket straps in 20 mm with curved ends designed for Oyster-style lugs are compatible with the ref. 1825. It is essential to verify that the strap end follows the curvature of the case and that the buckle width is consistent with approximately 16 mm. Milanostraps.it offers a range of handcrafted 20 mm straps tested on this case type.

The lifespan of a leather strap depends on the material and conditions of use. A quality vegetable-tanned alligator strap, properly conditioned with leather cream and protected from prolonged moisture, can last between three and six years with regular wear. Box calf has a similar lifespan but is more sensitive to perspiration. Avoiding contact with salt water or chlorine significantly extends the strap's life.