I know these are not preheat, but they still look to be pretty vintage, I contacted the guy, he still has them, says both of them work and include the lamps. the ballast pictured looks like it could possibly be leaking tar but i cannot really tell... they do not say no PCB, at least that i can see. so that should help date them. does anyone have any idea roughly, or are familiar with the company?
https://raleigh.craigslist.org/hsh/d/raleigh-48-fluorescent-fixture/7264269017.html