7-transistor mantle radio
This Murphy model was also released under the AWA NZ brand.
The cabinet was used on several Australian (AWA) valve and transistor models dating back to the early 60's.
Valves (7 transistors, 3 diodes): BC148A, BF254, AA132 Diode, BF254, AA138 Diode, BC148C, AC122 (violet), AC117, AC175, 1N3194 Rectifier
Intermediate Frequency: 455kc/s
Frequency Bands: 1
General Construction Notes for Allied Industries Ltd (Fisher & Paykel):
Murphy stereogram model prefix indicates radio bands - ie: SGA is Stereogram All-Wave, SGD is Stereogram Dual-Wave. SG means Stereo broadcast band radio only (stereo referring to the record player - radio was only mono. Dashes and spaces seem to be used in some places while not others - ie: SG1387 is the same as SG 13-87
Dating Murphy equipment is a little difficult due the codes not appearing to contain dating info. Here is what can be seen from the models examined:
SGx61x (ie SG615, SGD618) radiograms seem to have run from 1959 through until 1961/62 and used Garrard Type A record changers (these were released approximately 1959)
The first digit or digits seems to reflect the number of active devices (ie: SG 14-32 has 14 transistors, SG615 has 6 valves)