Charles Zuber presents an aerial and contrasting creation, of very high quality: the PERFOS KARL. A skeletonized watch realized in collaboration with the Genevan guardian of traditional material work, Cédric Johner. True to the spirit of the brand, this exclusive edition is limited to 8 pieces of 39mm in 18-carat pink gold - all unique. Each watch is full of emotion and characterised by the uniqueness of its finishes. Set with 84 saffron orange baguette-cut sapphires, totalling 2.42 carats, each movement has been entirely transformed by hand. The PERFOS KARL, with its meticulously chosen openwork, is pierced by emptiness and bathed in sunlight thanks to the warm-coloured precious stones. Sandwiched between two sapphire crystals, like two wide-open windows on the transformation of the 01 calibre, one can glimpse the mechanical anatomy that has been revealed under the bold and expert hands of Cédric Johner: the gear train is visible, one can make out a ballet of chamfered, satin-finished and polished-angled components. Mechanical, with automatic winding by means of a bidirectional oscillating micromass in platinum set with 39 brilliant-cut orange sapphires totalling 0.1 carats, this three-hand calibre, initially made with 164 components and 33 jewels, naturally lent itself to future developments, such as skeletonisation. Several components have been modified and opened up, notably the plate, bridges and wheels of the gear train.