I saw this in CL and was wondering if anyone knows anything about it. It looks like a cool project, and it's cheap. The seller does not know anything about it but it works and has scratchy pots and it is from the 60's.
I have no idea, but the simplicity of the thing is cool and it looks really nice for being so old. I'd probably pick it up to tinker with, and just to have something different if it's not expensive.