It is a 1959 (I think) AMF Roadmaster made by the Clevland Welding Company. She was a little rusty and dirty, but after finding that you can clean chrome with tin foil dipped in water, I've got her looking much better.
You can see what it looked like before here:
I bought it for $15 at a garage sale this weekend - along with a $5 NES for my husband.
Of course we had to set it up right away when we got home and try it out.