OK guys, the good deal just got a little less good.
I hooked it up in series with a 200 watt bulb and it was bright like there was a dead short, pulled the chassis back a bit and sure enough, the transformer is toast!
I had suspected this prior because there was a stain on the corner of the chassis that looked like transformer spew.
It actually looked like there had been a small fire underneath but I think it was just smoke damage. I think this is vintage damage because there are no fresh smoke smells.
Sooo... anyone have a transformer out of an RCA 630 series chassis?
P.S. the front is wood. It comes off just like most of the other RCAs of the era. Remove two wing nuts and the knobs and the whole thing tilts right out.