The SAGA:
A little history from Rolex themselves:
“As an underwater survival tool, this watch’s design has been entirely dictated by the practical needs of divers. Since 1953, the Submariner has evolved technically as it has been endowed with features to improve overall functionality. The first watch was a pioneer and subsequent versions have continued to set the benchmark for divers’ watches”
In the spirit of innovation and technical progress, the Rolex Submariner reference 1680 was the first submariner to feature a date complication. It was also the first submariner date to feature factory tritium luminous material. The shape of the tritium luminous plots—circles, rectangles, and a triangle—makes the time easy to read accurately in the darkest night or murkiest depths.
Tech Specs:
Year of manufacture: 1977
Serial Number: 527XXXX
Dial: Superb Mk II dial, with even butterscotch patina. Original hands have been matched. Correct silver date wheel with open sixes and nines. Currently fitted with a True Dome D19 crystal.
Bezel insert: Well-preserved Mk III that has evenly faded to a navy blue.
Case: Very good case that has been polished in the past. It retains thick and even lugs, with a hint of chamfer still present.
Bracelet: Tight 93150 with 580 end links.
Movement: Rolex Caliber 1575
Accessories: Original cyclops crystal
Watch is currently running at COSC spec