Patek Philippe Nautilus Ref. 5711/1A-018

 This is a highly sought-after and extremely rare Patek Philippe Nautilus, notable for its distinctive Tiffany Blue (also known as "Tiffany Dial" or "Tiffany Teal") dial. It's a limited edition model created to commemorate the 170th anniversary of the partnership between Patek Philippe and Tiffany & Co. Its discontinuation shortly after release, combined with the iconic dial color, has made it one of the most desirable and valuable modern watches in the world. It features a stainless steel case and integrated bracelet, and an automatic movement.