This might surprise you but Franck Muller did not only make tonneau watches... The Double Mystery has been and still is one of the best sellers of the brand. Although the brand has been losing ground for a few years, the Double Mystery remains an extremely sought-after and appreciated model. Franck Muller's strength was his ability to create movements that were each crazier than the next and to combine them with real jewellery-making. Discover a new way of telling the time with this Double Mystery, the hour and the minutes are represented by 2 arrow heads in Emeralds placed on 2 distinct discs, it is not the arrows that turn but the discs! A watch still totally up to date with its case and dial entirely set and a generous diameter of 42mm.