Designa Individual's custom Patek Philippe Nautilus combines modern materials with over 180 years of Swiss craftsmanship. Called the Black Grail, an octoganal 40mm carbon fiber bezel covers a black DLC coated case housing Patek's Caliber 324 S C movement. The face is set off with a while stripe and white markings. The band is made of the same uniquely finished carbon fiber as the bezel. The Black Grail is available for order now.