The Mullard model 537 was manufactured for C. & A. Odlin Ltd by Philips Electrical Industries of N.Z. Ltd in 1947.
5-valve dual wave radio.
Rebranded Philips model 648
Valves (5): ECH35, EF39, EBC33, 6V6GT, 6X5GT
Intermediate Frequency: 455kc/s
Frequency Bands: 2
Chassis Notes(most schematics can be clicked to download a full size version)