The Patek Philippe Calatrava Skeleton 5180/1R-001 is a masterpiece of horological artistry, featuring a fully skeletonized and hand-engraved ultra-thin self-winding movement. Encased in 18K rose gold, this timepiece showcases the intricate craftsmanship of Patek Philippe, with the engraving process alone requiring approximately 130 hours of meticulous work. The watch's design offers a captivating view of its mechanical heart, making it a true testament to the brand's dedication to rare handcrafts.