Strap for Rolex Big Bubbleback 6105 (pre-Datejust)

The Rolex Bubbleback 6105 features lugs with a width of 20 mm, measured at the attachment point between the two case lugs. This measurement is essential when selecting a compatible strap. The lugs have a curved, tapering profile, so straps with pre-curved ends are strongly recommended to ensure seamless aesthetic continuity with the case.

The most suitable strap for the Rolex Bubbleback 6105 is one crafted in vegetable-tanned alligator leather with curved ends that follow the original lug profile. Smooth calfskin or shell cordovan are excellent alternatives for those seeking durability or a natural patina over time. A tang buckle in steel or a brushed steel deployant clasp are the most appropriate closure options. Vulcanised rubber is aesthetically inconsistent with the formal character of this reference.

To replace the strap on a Rolex Bubbleback 6105, you will need a spring bar tool with a forked tip. The Bubbleback's lugs accommodate standard 20 mm spring bars. Insert the tool tip into the gap between the lug and the strap end, compress the spring bar, and slide the strap free. Proceed carefully to avoid scratching the case. Using a watch cushion to support the case during the operation is strongly advised.

Yes, a wide range of aftermarket straps are compatible with the Rolex Bubbleback 6105, provided they conform to the 20 mm lug width and feature curved ends to match the original lug geometry. Milanostraps.it offers a curated selection of handcrafted leather and alligator straps, available both ready to ship and bespoke, all fully compatible with this case.

The longevity of a leather strap depends on the quality of the hide, the craftsmanship, and the conditions of use. A high-quality vegetable-tanned alligator strap, kept away from excessive moisture and chemicals, can last between three and seven years with regular wear. Shell cordovan, owing to its dense fibre structure, tends to outlast most leathers while developing a distinguished patina. Casati Milano backs all its straps with an 18-month production defect warranty.