JB Roger Dubuis EXCALIBUR King Series RDDBEX0260 (Sports Version of RDDBEX0393, 45mm Diameter, Safety Guard Bridge Crown with Original-Like Winder Included)

A meticulously crafted replica of the most authentic open-worked tourbillon watch ever made. Built on a genuine tourbillon movement foundation, it fully replicates the original RD505SQ integrated tourbillon caliber in every structural detail. Features weight screws on the balance wheel just like the original, skeletonized sword-shaped hands, and achieves up to 98% similarity in overall movement structure. Equipped with an original-style safety guard crown and a new enclosed folding clasp, the movement architecture includes no missing parts or extra gears. For detailed reference, compare with official images from Xiaohao Biao (Watch Home). Sapphire crystal with scratch-resistant properties and original folding buckle included. The timepiece exudes boldness, elegance, and modern flair—stylish, eye-catching, and packed with presence; a must-have for fashionable, sophisticated gentlemen. Considered another masterpiece following the Richard Mille tourbillon and Roger Dubuis Double Tourbillon models. JB Factory—born for high-end tourbillon replication.