We treated this classic aluminium bezel 16600 Sea-Dweller to a full service with Rolex, and it has come back to us in perfect condition with a full 2 year international warranty. Rolex only seemed to make 1 Sea-Dweller for every 5 Submariners and when this 4000ft model was discontinued in 2008 prices immediately began to increase. This example comes from the final few years of production just as Rolex was gearing up to release their 44mm Deepsea. Remember, these iconic steel sports models are always guaranteed to increase in value.