5-valve dual-wave set.
Intermediate Frequency: 455kc/s
Chassis Notes: N & M variants similar - note suggests some N variants may have a 6V6 instead of the 6AQ5, possibly a transitional model between the 27 (octal) and 27M (miniature).
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.