Verified with a source, Sol50 from Processor
Technologies.
Company was named Processor Technology, not Processor Technologies.
I join with others in failing to recall a SOL-50 in the line.
Possibly, a third-party reselling re-labeled it to distinguish
his value-added package from the standard SOL-PC, SOL-10, and SOL-20
which were what the firms actually sold. A Z-80 upgrade for the
SOL that I recently sold came with a new nameplate to rename the
machine 'ZOL' instead of 'SOL'; maybe we're looking at a similar
phenomenon.
Regards,
-doug q