Rolex Submariner Date "Red Sub" accessories and an outer tachymeter scale

and an outer tachymeter scale with printed indices

and those on the higher end

The first departure

Its design was groundbreaking: where in pervious chronographs the telemeter and tachymeter scales were on the chapter ring of the dial

Rolex Submariner Date "Red Sub" accessories and an outer tachymeter scaleIn the late 1960s, Rolex made a tiny change to the Submariner that, forty years on, sends ripples through the vintage Rolex collector community. We mean, of course, a single line of red text on the Reference 1680 Submariner, a watch that has gone down in history as the Red Sub. From the late 1960s to the late 1970s, there were seven different dial variations of Red Sub, being dubbed by collectors as Mark I through Mark VIII dials. Generally, these