The Philips LZ546UB was manufactured by Philips Electrical Industries of N.Z. Ltd in 1956.
5-valve (6-valve equivalent) portable broadcast band battery / AC or DC mains radio with magic eye tuning.
Intermediate Frequency: 455kc/s
Frequency Bands: 1
Chassis Notes(most schematics can be clicked to download a full size version)
Service information (Philips_LZ546UB.pdf) here