that looks like a quality made generator Mike, I like the 3 windings, it probably has a bit steadier current flow than the Jensen 2 winding models I would imagine.
I’m sure this was built from a casting kit. The machine work is good, but the actual finish on the parts leaves a bit to be desired. The ceramic field magnets are very strong and only held in the frame by some kind of adhesive that was applied in a very sloppy fashion and is not holding well. I may have to re-attach the magnets properly at some point with some epoxy. The armature windings had black electrical tape wrapped around them too. It was pretty ugly before I cleaned it up! I plan on belting it up to my Jensen 50 to see what it can do. It came mounted on a board with four miniature light sockets all wired up. I think it will actually give the 50 a decent load.