I was just given one of these tonight by a member of the local ARC. It looks original under the chassis, so I'm sure it needs a re-cap job.
But at least it's decently clean. And since I like to homebrew, I'm sure I will get some use out of it after I have it up and going. I'm going to have to get a schematic and study it, I understand what the rectifier tubes do, and what the regulator tubes do, but why it has a pair of 6L6GC's I'm not so sure of.