The 'Austin' brandname was introduced in 1936 and lasted until around 1939.
Austin's manufacturer is currently unknown, they were distributed by Radio Warehouse Ltd. Currently there are 10 documented models.
Chassis' often painted flat pale green colour, and often the date of the chassis is stamped on the underside.
Dials typically the 4-quadrant black and white art deco design. This dial (along with the chassis colour and the date stamp) is also found on Haywin sets - suggesting that they were manufactured by Cash Radio Co. as well.
Sets are often simple and crudely assembled - suggesting short runs or made-to-order sets built on a budget. Some advertising suggests the sets are 'British Built' which inspired loyalty back in the day - although this is somewhat disingenuous of them, given they were made, as best as can be figured, in Christchurch - and the valves were standard American lineups in all sighted models.
Austin appears to have disappeared with the onset of WWII, like so many other small brands.