1655 Sea-Dweller Mk1 Patent Pending

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Rolex Sea-Dweller Submariner MK1 "Double Red" Patent Pending
Brand: Rolex

1655 Sea-Dweller Mk1 Patent Pending

After some initial testing and with with the help of a deep sea company, COMEX (the NASA of the deep). Rolex applied for the patent of this new case design that incorporated the Helium Escape Valve (HEV). These early and very rare SeaDwellers had "Patent Pending" in parenthesis on the caseback and now are most desirable by collectors.

1655 Sea-Dweller Mk1 Patent Pending

After some initial testing and with the help of a deep sea company, COMEX (the NASA of the deep). Rolex applied for the patent of this new case design that incorporated the Helium Escape Valve (HEV). These early and very rare SeaDwellers had "Patent Pending" in parenthesis on the caseback and now are most desirable by collectors.

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