1978 (5.2M serial) Rolex 1680 SubmarinerIf you‚Äôve been looking for a true tool watch look no further. This beautiful 1680 remains in unpolished condition. Dial is flawless and has taken on a custard color patina, with the hands aging a few shades darker. Later (G/1982) 93150 with 580 end links. 10 links total.