Since the 1980s, Franck Muller has become a name synonymous with beautiful finishing and unique designs. From its creation, the Cintrée Curvex case was very unique. Indeed, the Haute Horlogerie was bound by tradition and consequently not very open to innovation, especially in terms of design. At the time, there were plenty of round watches and perhaps a few rectangular ones, but there was nothing like Franck Muller’s Curvex. So it was a bold move to introduce, in 1992, something previously nonexistent on the market; a tonneau curved body in 3 dimensions involving great technical difficulties in manufacturing. Thus, Franck Muller watches became easily identifiable due to their tonneau shape that is commonly recognized as the brand’s most significant silhouette. For the brand, it quickly became a great success and a way to express its unique identity, assert its DNA and demonstrate its know-how in case manufacturing.