The Philips P636 was manufactured by Radio Corporation of New Zealand Ltd in 1936.
6-valve all-wave set manufactured for Philips by RCNZ
Valves (6): AF3, AK2, AF3, ABC1, AL2, AZ1
Intermediate Frequency: 456kc/s
Chassis Notes (most schematics can be clicked to download a full size version): Uses Philips P-base side-contact valves
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.