The Rolex Masterpiece Collection is an off shoot of its prized Presential Series. Basically the Masterpiece or Pearlmaster, is a president on steroides. The case and bracelet are chunkier and it almost always comes with a diamond bezel. There are currently 3 different sizes 29mm , 34mm , and 39mm. Rose Gold, Yellow Gold and White Gold are the metals used and one variation has all three: The Tridor.