With a production year of 1984 this watch was produced at a time when parachute pants and Ralph Macchio were equally cool. While both of those have faded into obscurity the watch at hand, this Sea-Dweller, remains relevant and important. No timepiece holds and increases in value like a Rolex. This version of the Sea-Dweller is known as the Triple Six. To be clear, this nickname has no ties to any sinister or nefarious goings on. The name come from the reference number 16660 which is a transitional model produced from 1978 through 1988. Updated from it’s predecessor, the 1665, with a sapphire crystal, increased water resistance, quick set date and the addition of calibre 3035 the 16660 is the blueprint for modern Sea-Dwellers. During the 10 years it was in production the 16660 had a few dial configuration changes. All very subtle but changes nonetheless. This version has a Mark IV which has a slight patina fading from glossy to matte and shares many characteristics of the Mark 1, as well as white gold surrounds on the number markers These small but important subtleties prove that the devil is in the details – pun intended. This watch comes complete with box and partial paperwork.