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:
General Construction Notes for Wellmade Ltd:
Radios made for Johns in the 30's were often available in AC, DC or Battery. DC, because large tracts of Auckland (where Johns and Wellmade were situated) were powered from DC plants.