The big difference is the movement and dial, both of which have been opened up for the first time in an Overseas QP. Vacheron has quite a history with skeletonization, though it’s typically employed in a more traditional, dressed-up context. That means that the plates and bridges, at least what’s left of them, usually have ornate engravings that highlight just how little metal is retained, typically just enough to ensure structural integrity and reliability, letting as much light through as possible. This execution, in contrast, has been tailored to suit the watch’s overall aesthetic. This means that bridges are given a straight-graining treatment and edges are beveled with sharp edges, giving the components a ton of definition and lending a slightly more contemporary and architectural look. Paired with the sapphire dial, which features applied gold hour markers and floating white discs for the calendar indications, this gives you a skeleton fit for the 21st century and not a tribute to watchmaking times of old.