Grundig Signal 500E Black plastic case with 6 pushbuttons, slider volume control and side mounted tuning knob.Long/Medium/Shortwave/VHF.Powered by 9 volt Battery (PP9) or 115/220v mains supply. I purchased this set in 1974 and it is still in regular use (I have circuit diagram and original receipt) made in Portugal
The original cost of the set was £29.95 and the PP9 battery £0.28
