The Courtenay 7BD was manufactured for Turnbull & Jones Ltd by Radio Corporation of New Zealand Ltd in 1934.

7-valve battery set, dual wave. 

Photographed model has been severely modified to run on 230V AC using octal valves, but the chassis and speaker appear original.

Valves (7): 1C6, 34, 32, 30, 32, 30, 19

Intermediate Frequency: 256kc/s

Frequency Bands: 2

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

Note: 2 different versions, check position of tone control on your set

Service information (Courtenay_Pacific_and_CQ_1935_model_7BD_Service_Info.pdf) here

1934 Courtenay v1 7BD Schematic

1934 Courtenay 7BD v2 Schematic

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.