The Aust. Sound Systems amenities set. I could not find much on the A.S.S. Company, other than they fulfilled a contract for loudspeaker systems for the army in 1942.
These A.S.S. amenities sets were built to last: they have a large high fidelity speaker mounted within a solid case. I can barely carry the set, it must weigh around 15 kg .
The metal case has a circuit diagram and a list of Aust. broadcast stations and frequencies. Most of these Aust. AM broadcast stations were on air into the 1980s. To change bands , you undo the knurled knobs, remove the tuning box and turn it 180 degrees and push it back in.
Some effort has been made to water proof the set, with a rubber gasket around the front edge and the tuning box has it's own rubber gasket.
The valves in the set are typical 2 Volt filament battery tubes of the era and the same type of tubes were also used in the No. 11 set ( Aust.)
A comprehensive article on the set
https://www.tuberadio.com/robinson/museum/V5/