1970s Certina DS-2 SuperPH 1000M with black dial

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Built like a submarine for the wrist, the SuperPH 1000M is a legendary deep-sea instrument that was famously tested during the Navy's TEKTITE underwater exploration missions. This reference features a massive, 43mm slab-sided case paired with a unique, push-to-turn locking bezel to prevent accidental movement underwater. With its minimalist matte black dial, this is a hardcore, historical tool watch that sits at the absolute summit of vintage dive collecting.