5-valve broadcast band mantle radio.
Date is based on the dial style, which is very similar to that of the Philco model 201 from 1949.
One variation shown (from the JWS photo archive) has a different dial and knobs - possibly later - early 50's
Intermediate Frequency: 462kc/s probably
Frequency Bands: 1
Chassis Notes(most schematics can be clicked to download a full size version)
This variant has miniature valves. and a 1953 date on the speaker. It also uses ETA IF cans, similar to the early Bell Colts (1953 and prior)