More likely a very simple radio. Although, by ignoring the detector side, could have been an amp.
35W4 was the rectifier, 12AT6, 12AV6, whatever, diode detector, triode preamp with a 50C6 final amp.
Want to repair it, or what? A zillion of those types of devices were made, by everybody...
Simple amp like that, especially with no power transformer, you ought to be able to trace out a schematic. Component values should still be visible and, frankly, were pretty sloppy back then.