5-valve all-wave (3 band) tablegram.
Note the studio photograph by Gordon Burt Photography in Wellington (retrieved from the Alexander Turnbull Library online) and the near-perfect likeness in the newspaper advertising - These studio photographs pop up from time to time and were obviously taken to base print advertising on.
Intermediate Frequency: 455kc/s
Frequency Bands: 3
Chassis Notes(most schematics can be clicked to download a full size version)
Service information (Philco_-_model_1203_1203A_radiogram_-_5V_AW_AC_-_1947_.pdf) here