Capitol. It originally came complete with the either two or three soft-jacketed white wires coming out the back. A former church of mine picked up a Capitol 4.5x6 once. It was a light, but it had the "soft white wires" and had a bunged-up colorframe holder. No idea where it came from originally or what's happened to it since.
Bench focuses just like an Altman. Three screws (including one over the "I" in CAPITOL) 120° apart go into the socket mounting plate, the center screw locks it down. The three 1/4" holes were for the three asbestos wires.
Anyone know what happened to Capitol? Or what the letters A and N mean on the cap?
[edit: Upon second thought, I think the letters are N and Y--wonder what that could mean?]