IEE bulletin AG-3A for plasma panel
IEE (Industrial Electric Engineers) designed and manufactured the largest selection of
displays in the 50s to 70s.
How I wish I had photos of videos of their trade show booths,
showing off all the colors and bling!
Ebay is full of them, at high prices since it's vintage retro tech!
Long ago at the Trenton Computer Fest,
I bought one new-in-wrapper 4 line 16 character display assembly.
Here are the specs.