Radio receiver and documents, Airzone model 5057 'Symphony Leader', Bakelite / glass / metal / electronic components / paper, designed and manufactured by Airzone Ltd, Camperdown, New South Wales, Australia, 1938
The Airzone radio cabinet is a brown Bakelite 'tombstone' form with large circular frequency dial and four black knobs below. The speaker grill has three segments, they are outlined with white Plaskon urea-formaldehyde fittings. Brown and white speckled fabric covers the speaker. Chassis # 537.
There are circuit diagrams (3 sets, 6 pages) noting circuit changes and repairs over the years. Two of the diagrams date from 3-1-75 & 6-4-81. The other has no date.
There are two used valves wrapped in plastic also stored in the back of the radio receiver.