Over the years I have managed to aquire a number of unique diving items; some were prototypes others were production models.
None is more unique and useless as the rear view mirror that was not only designed and developed but was placed in to production and actually marketed--A rear view mirror for scuba divers for use underwater.
I recently un covered one in a box that had not been opened for at least 10 years--never used still in its original package.
The questions are
Who marketed it?
When?
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