The Companion Oxford was manufactured for Johns Ltd by Wellmade Ltd in 1936, it was in production for 2 years.

Companion radios were custom configured, so almost all the 1935-37 chassis' that Companion had were available in the Oxford cabinet.  The one pictured is probably the 65 All-Wave, although only a front photo is provided (from the photo archives of John Stokes).

Sets available in the Oxford cabinet, according to the 1936-37 Johns catalogue:

Companion 55 Broadcast (5-valve AC or DC)
Companion 55 Dual Wave (5-valve AC or DC)
Companion 65 Broadcast (6-valve AC or DC)
Companion 65 All-Wave (6-valve AC or DC)

Technical Information

General Construction Notes for Wellmade Ltd:

Radios made for Johns in the 30's were often available in AC, DC or Battery. The inclusion of DC power options was because large tracts of Auckland (where Johns and Wellmade were situated) were supplied by DC power generation.