I recently stumbled across this old radio. The back cover of the radio is missing, I assume this is where the model info would have been printed.
At first I thought this is the Arvin 160T model, which looks identical. However, the 160T is AM-only, I have learned this radio is the 360TFM model which is AM/FM
I’ll see what else I can find about this online, and have the internals serviced by The Resistance electronics repair shop soon.
The 160T schematic can be found in the Most-Often-Needed 1949 Radio Diagrams and Servicing Information book by M. N. Beitman
360-TFM photos from Preserving Arvin
and here is the 360TFM Schematic