UK retailed in Jan 2005, this is the 5-digit stainless steel Sea-Dweller ref. 16600. 

These end-of-era 40mm aluminium bezel sports models are superb value, as they continue to perform particularly well in what has been a challenging market. It features a black anodised graduated dive bezel, a scratch-resistant sapphire crystal glass, and a green glowing Luminova dial. Fitted to the tough all matte '93150' Oyster Fliplock bracelet with diving extension, powered by Rolex's self-winding calibre 3135, and waterproof to 4000ft.

Presented with its Rolex box, booklets, Sea-Dweller instructions, both swing tags, bracelet tool, Buehlmann table chart, bezel protector, and F-serial perforated warranty papers dated Jan. 2005. Under our two-year warranty.