Saw this on another post and thought it was interesting. I am not surprised about Patek or Rolex, but I'm surprised to see Cartier and Lange. Not shocked on IWC. I like their Mark series but I suspect its because they have a breadth of price points and that is the common driver for why brands hold value vs others -- breadth in price points vs just super high end. The # of watches would indicate that but Rolex defies that. How much is it brand popularity and marketing?