Geneva-based watchmaking maison Vacheron Constantin debuted a peerless range called the Métiers d'Art "Les Masques" in 2007 that featured precise replicas of masks from the private collection of the Barbier-Mueller Museum, also in Geneva.

Presented and sold as a boxed-set of four watches, Vacheron Constantin promised a new set each year till 2009. For 2008, the set features meticulous three-dimensional recreations of tribal masks from Mexico, Japan, Gabon and Papua New Guinea.

If you take a close look at the Buddha mask from Japan, for example, you will see the particular skills that Vacheron Constantin employed to keep the masks as close to the originals as possible. Here, the engravers have drawn each strand of hair individually through line-engraving.

Considering the miniaturized form they are executed in here, crafting these masks is no mean feat. Time is displayed via four discs rotating beneath windows on the translucent dial, courtesy of Calibre 2460G4.