3527 IWC GST Deep One


Dive watch tech advanced at a dizzying pace between introduction and mass adoption in the mid-50s and ’70-ish. Helium escape valves, locking bezels, domed crystal, new types of steel, tritium lume, etc. Then the genre found its footing and slowed, a bit like how they say both the goblin shark (that google will haunt your…

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