https://watchesbysjx.com/2016/07/vacheron-constantin-ups-its-skeletonisation-game-with-the-malte-tourbillon-openworked.html
Vacheron Constantin Ups its Skeletonisation Game with the Malte Tourbillon Openworked | SJX Watches
Vacheron Constantin introduces the Malte Tourbillon Openworked in pink gold, having refined the skeleton movement.