After I researched, I think you might want to check for a company called "Harmony" or a store that sells "Harmony" products. There is also buying the supertone guitar online.
I actually have a Supertone hanging on my wall at home. It's old, I found it in a barn in North Carolina. I think they are an old guitar and I've not heard of any except for the 'wall hanger' I have. 'El Cheapo' I think?
