The Courtenay 6BS was manufactured for Stewart Hardware Co. by Radio Corporation of New Zealand Ltd in 1933.

6BS - 6 valve, Battery set, Superhet design.  Known to exist in Pacific and Courtenay models, possibly others

Valves (6): 34, 32, 30, 34, 30, 33

Intermediate Frequency: 175kc/s

Frequency Bands: 1

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

Pacific - Courtenay model 6BS Instructions

Pacific - Courtenay model 6BS Schematic

Pacific - Courtenay model 6BS Service Data

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.

All documented models using this chassis (2 in total)

1933Pacific 6BS
1933Courtenay 6BS - this set