First in the series of similar looking 'Thorn' portable TVs. This one is fully operational on 625 lines and is a very early one being largely valve with only a few transistors (hybrid). Later models in the 70's progressed to all transistor and on to integrated circuits. Externally the appearance remained similar. This one dates from the late 60's.
Very common 'Thorn 1500' chassis black and white 625 only set. This one carries the 'HMV' brand and is in full working condition. It has a broadcast illuminant 'D' tube fitted to reduce the colour temperature for film work.