The Rolex Sea-Dweller 4000 ref. 116600 was a short-lived Sea-Dweller reference, with a three year production run between 2014 and 2017. It is the last 40mm Sea-Dweller, and also unique in that it did not feature a cyclops on the date window. These factors make it perhaps one of the most collectible modern Rolexes. Would it have a spot in your collection?