Rolex
Cellini 50509-0017— lug 20mm

The Rolex Cellini 50509-0017 features a lug width of 20 mm. This measurement is the result of Rolex's proportional calculation to maintain harmony between the case diameter (39 mm) and the overall structure of the watch. To verify correct strap compatibility, measure the distance between the spring bar attachment points using a digital calliper.

Alligator leather represents the canonical choice for the Cellini 50509-0017. Its natural texture, characterised by uniform and tapering scales, mirrors the clean geometry of the white gold dial. Alternatively, vegetable-tanned calf leather offers versatility and develops a natural patina over time, whilst FKM rubber represents a modern and durable option without stylistic compromise.

Proceed with extreme caution. Position the watch on a soft, flat surface. Using a small pointed tool (spring bar tool), gently press inward one of the spring bars whilst simultaneously sliding the strap outward from the lug. Repeat the operation on the other side. When inserting the new strap, ensure that both spring bars click perfectly into position, verifying alignment from inside the strap.

Yes, provided the strap is specifically manufactured for the 20 mm lug width. High-quality artisanal straps, such as those supplied by specialised sartorial ateliers, offer complete compatibility whilst guaranteeing the same level of finishing and reliability as the original Rolex strap. Always verify the lug width reference number before purchase.

Durability depends on the material and usage patterns. High-quality alligator can last 3-5 years with regular maintenance and rotation with other straps. Vegetable-tanned calf leather has similar longevity, whilst FKM rubber can last up to 7-10 years thanks to greater resistance to atmospheric agents. Regular maintenance with specific cleaners and proper storage significantly extend the life of the strap.