All The classic Sub hallmarks had been existing in ‘53: the black, luminous dial; the rotating dive bezel; the matching metal bracelet; the screw-down crown. And but. Watch nerds love Christie’s This was mainly a ref. 6538 — it even now highlighted the 200m of drinking water resistance, graduated bezel, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/