The Courtenay model 22 was manufactured for Turnbull & Jones Ltd by Radio Corporation of New Zealand Ltd in 1940.

1940 5-valve broadcast receiver.

Valves (5):

Chassis Notes(most schematics can be clicked to download a full size version)

1940 RCNZ model 22

General Construction Notes for Radio Corporation of New Zealand Ltd: The first digit of the serial number typically indicates the year of manufacture of RCNZ chassis' (although not the decade - that requires a little knowledge of the valves, construction, etc). Sets from around 1934 onwards were often (but not always) constructed in a distinctive pressed 'baking pan' style chassis, seemingly unique to RCNZ.