This rare 'triple six' transitional Sea-Dweller is a beautiful example of how a rich patina really enhances a watch's looks, value and collectability. The Tritium lume on the dial and hands have acquired a rich honey-coloured patina that is matched perfectly by the original bezel pearl. The ref.16660 was the first Sea-Dweller to feature the rugged sapphire crystal and upgraded depth-rating of the modern SD's. Presented with its Rolex service papers (dated Jan 2014) and Rolex service pouch. Guaranteed by Watch Club for 2 years.