One of the best watch investments anyone can make under 20k. Not only is this 2003 'Y' serial aluminium bezel 16600 Sea-Dweller long discontinued, it is also, quite remarkably, still in "like new' condition with factory caseback sticker still attached. Barely worn, this professional diver's watch with helium escape valve is waterproof to 1220m and complete with its Rolex box, punched Rolex certificate, booklets, anchor, Buehlmann dive chart and special micro Rolex screw-driver. A true Rolex time capsule, and guaranteed investment.