Case material: Yellow gold; Charge: Manual; Conditions: New Presentation condition : With boxes and all papers; Model: Tourbillon Price on request Gmtbroker Reference: 3755BA/OE/9V6 breguet grand complication tourbillon perpetual calendar skeleton 18kt yellow gold 40mm extremely rare and numbered model hand-engraved skeleton dial with hand engraved decorated movement the breguet brand offers watches of the highest quality matched with incredible style. we are proud to offer one of the rarest and most collectible breguet grand complication watches ever produced. this is an exceedingly rare wristwatch with more wrist presence than you could imagine. skeletonized watches are great to begin with, but combine the skeletonization with the tourbillon and perpetual calendar features and you have a watch you will definitely not want to take off. and, depending on your mood, this watch can serve as a conversation started par excellence. let's start with the case, since i think that breguet’s signature “coin edge” case is one of the industry's most attractive designs. this case is solid 18k yellow gold with dimensions of 40mm wide by 11mm thick. front and rear sapphire crystals permit viewing the caliber in great detail. while this case shape looks great, it's style is overshadowed only by its comfort. this masterpiece features a breguet caliber 558 qpt movement with 21 jewels and 18,000 vph. power reserve up to 50 hours. waterproof 30 meters / 100 feet. of course, the real story with this caliber is the hand skeletonization and deco