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Arnold & Son - TBTE Tourbillon

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Unveiled just few days before the opening of Baselworld 2015, the new Arnold & Son TBTE Tourbillon combines two typical Arnold & Son complications: tourbillon and true beat seconds mechanism.

A red gold case with a diameter of 44 mm frames a dial where the combination of multilevel bridges and open-worked main plate creates a three-dimensional effect. The decoration of the main plate is a reminiscence of an old guilloché pattern found on the cases of antique Arnold & Son pocket watches.

Adopting the classical English movement design, the skeletonised tourbillon and motion-work bridges are triangular. A technical challenge, the barrel spring and the tourbillon cage are centred along the watch’s longitudinal axis.

The true beat seconds are also displayed on the dial side by a large central hand but the mechanism itself is located on the reverse of the movement.  This way, the movement has a complication to admire on each side.

The true beat seconds mechanism is characterised by the bridge shaped like a Celtic battle axe and the lever like an anchor, paying homage to Arnold’s maritime achievements.

The hand-wound movement - beating at 21,600 vibrations per hour with a power reserve of 72 hours - features Haute Horlogerie finishes including hand-chamfered bridges with polished edges, circular satin-finished wheels, screwed gold chatons, and mirror-polished tourbillon cage and bridge.

The Arnold & Son TBTE Tourbillon will be produced in a limited edition of 28 pieces.

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