The Murphy MA75 was manufactured for Fisher & Paykel Ltd by Allied Industries Ltd (Fisher & Paykel) in 1960.
Murphy All-Wave Mantle receiver, broadcast band + 3 SW bands.  Magic eye tuning.

Technical Information

Valves (6 + eye): EF85, ECH81, EF89, EBC81, EL84, EZ80 and EM81 (or EM85 ) Magic Eye

Intermediate Frequency: 455kc/s

Frequency Bands: 4

Chassis Notes(most schematics can be clicked to download a full size version) Broadcast band + 3 SW bands. Typically wired for EM81 eye, but could be EM85 - replace like for like or rewire to suit.

1960 Murphy MA75

Service information (Murphy_MA75_New_Metropolitan_-_6V_BS_AC_-_1960.pdf) here

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 making much sense to the author.  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)