EKCO (Eric Kirkham Cole Limited) produced TVs and Radios from 1924 until 1960 although the brand name lived on into the 1970s. This shop on Parliament Road was once an electrical shop.
The advert was revealed by the removal of a billboard around 2016 when it first appears on Google Streetview, it has visibly deteriorated since that point.
A complete copy of the same advert existed in Southamption, but this has since been hidden by a new building.
A really good example of this super sign has just been revealed behind broken plaster, and then preserved on the side of a Southsea, Portsmouth terrace on Winter Rd..brilliant of the landlord to do the work. Matt Scott-Joynt (scottjoyntpictures.com)..