This is the chassis from a Zenith cabinet radio, Model 760, Superheterodyne Receiver. I have not tested anything.Several of the tubes look they were installed in 1936 per their label. This did NOT have a bottom plate. The whole chassis was bolted and glued down to a shelf on the inside of the cabinet. Please let me know if you need or want to see any more detailed photos. I also have the front faceplate and wooden knobs listed in a separate listing. Also willing to drive an hour or so to meet someone locally here from Southern Maine.