This limited-edition 51-30 Chrono is both superstitious and super collectible. Only the number 13 marks the hours on this doomed time piece. This watch is not all bad luck, though. Its pro-level chronograph and 300 meter / 30 ATM water rating give you the upper hand when you need it most. If you want to make a mysterious statement, make one that’s big, bold, and black-on-black. Only 13 available in each region: US, EU, and AUS. Individually numbered.