The $100,000 Supreme
Spring/Summer 2013 collection, Supreme decided to customize a small handful of Rolex watches and gift them to a select group of friends and family members of the company. The watch that was selected to be customized was the reference 114060 no-date Submariner with Cerachrom bezel insert, and it is believed that only 20 of these exclusive watches were ever produced... More here.
Literally the only difference is that the words 'Fuck Em' appear on the dial in red. Crazy that such a small change can make such a difference to the value, but I guess it comes down to how many of them exist.