The Cartier Santos de Cartier Skeleton Ref. WHSA0016 is a breathtaking masterpiece of horological architecture, representing the pinnacle of the Maison’s technical artistry and its legendary design heritage. This exceptional timepiece, part of the “large model” collection, features a 39.7mm case crafted from solid 18K rose gold (750/1000) , which frames one of the most distinctive dials in contemporary watchmaking . The dial is completely skeletonized, offering a mesmerizing view of the manufacture mechanical movement with manual winding, calibre 9619 MC , where the Roman numerals—the very signature of Cartier—are not simply printed on a surface but are ingeniously integrated as part of the movement’s structure, carved directly into the skeletonized bridges . This rare feat of engineering transforms timekeeping into a visual spectacle, with the polished gold sword-shaped hands gliding gracefully over the intricate, openworked architecture . Powering this display is the meticulously finished in-house Caliber 9619 MC , composed of 138 parts including 20 jewels, oscillating at a frequency of 28,800 vibrations per hour and delivering a substantial 72-hour power reserve . The watch is secured by a beautifully integrated 18K rose gold bracelet featuring Cartier’s innovative “SmartLink” adjustment system for a perfect fit, and is also accompanied by an additional black alligator leather strap fitted with an interchangeable 18K rose gold folding buckle . Both the bracelet and the strap utilize the convenient “QuickSwitch” system, allowing for effortless changes to suit any occasion . The design is anchored by the iconic details of the Santos lineage, including the rose gold heptagonal crown adorned with a faceted blue sapphire and a robust case with 100 meters of water resistance, protected by scratch-resistant sapphire crystals on both the front and display back . A true icon for the discerning collector, the Santos Skeleton WHSA0016 is not merely a watch but a wearable work of art that pays homage to Louis Cartier’s original 1904 creation for aviator Alberto Santos-Dumont, now reimagined for the 21st century with unparalleled technical distinction and timeless elegance . Key specifications: 39.7mm 18K rose gold case; skeletonized dial with integrated Roman numeral bridges; manual-wind Cartier Caliber 9619 MC; 72-hour power reserve; 18K rose gold bracelet with SmartLink system and additional alligator strap with QuickSwitch system; 100m water resistance; sapphire crystal front and back .