Amongst one of the most sought after variants of the legendary “Bubbleback” series, the present reference 3599 with rigid hooded lugs is a true stand out. Rolex’s iconic “Bubbleback” gets its name from the protruding rounded case back designed to accommodate their patented self-winding movement and rotor. The reference 3599 is defined by its unusual case design featuring a flat cylindrical bezel of considerable width and “hoods” covering the open space normally found in between the lugs.