Hublot mens replica watch brand known for its “fusion” of materials, unveils another new case material — and some very eye-catching design elements in the movement— with its Hublot Classic Fusion Tourbillon Skull Replica, the latest in its series of “skull” replica watches, introduced at the recent Baselworld 2014 replica watch fair.

The material that Hublot uses for the case, bezel and crown of the Hublot Classic Fusion Replica is a type of ceramic-coated aluminum that is created through a treatment called MAO (Microarc Oxidation). The process involves surface conversion via plasma discharge in an electrolyte bath, forming a surface that is hard, dense and adhesive. The material’s micro-blasted finish, which gives this replica watch’s cases their distressed look, comes from manual sanding, ensuring that each case has a unique finish. The material (which Hublot has referred to as “ceramized aluminum”) has a hardness rating of around 1,000 Vickers, is highly resistant to corrosion and friction and is twice as light as normal ceramic.

The manual-wind, skeletonized tourbillon movement — Hublot Caliber HUB6014 — has been modified for use in this distinctive skull-themed tourbillon replica watch. The bridges and plates have undergone a laser-machining process that creates a relief effect that gives these normally flat components a 3-D appearance. The bone-like white surface treatment is achieved through an electroplating process in which the components are first rhodium-plated and then micro-blasted to turn the normally metallic finish into white.

The one-minute tourbillon barret is formed in the shape of a skull, the skeletonized, micro-blasted hands have a black galvanic treatment, and, in a first for Hublot, the indices are Roman numerals. The movement has a power reserve of 120 hours. The case measures 45 mm in diameter, has a water-resistance of 30 meters, and comes on a vintage-style black calfskin strap with a black rubber deployant buckle. The Hublot Classic Fusion Tourbillon Skull is limited to only 50 pieces. Photos of the replica watches (with two different movement finishes) are below.