The Philips F5Z37A was manufactured by Philips Electrical Industries of N.Z. Ltd in about 1967.
8-valve Hi-Z broadcast band stereogram with Philips AG1025W or BSR UA15 record changer.
7-valve equivalent, circuit uses two rectifier valves instead of one.
Year is a guess based on valve lineup and printed circuit board use.
Almost identical electrically to the F4Z37A Concorde
Also available as an F5Z67A, which uses different valves but looks identical otherwise
Intermediate Frequency: 455kc/s
Frequency Bands: 1
Chassis Notes(most schematics can be clicked to download a full size version)
Service information (philips-f5z37a-celestialf5z38a-cornergramf6z37a-capricorn-stereograms.pdf) here