The introduction of the Fine Watchmaking Collection by Cartier did several things for the brand, and one of them was making them known for their refined skeleton watches. This was a complication Cartier previously rarely ventured into, with only a few examples known in their history, many of them piece unique.
Over the last couple of years, Cartier did show that they can make an incredible skeleton watch. For this they followed the same recipe: they created bridges which look like Roman numerals (a Cartier signature since the brand was founded) Because Cartier is also the brand of the shaped cases, many of these movements had to be completely redesigned, as the movement has to fit the case precisely. Then you get watches as the Crash Skeleton, Santos-Dumont Skeleton, and this Clé de Cartier Skeleton. Read the entire article on Haute Time