Thank you all for your views and thoughts. I was feeling totally gutted yesterday and began to think we had acquired an 'iffy' photo from a third party on Ancestry so took myself off to the library. Found that GH Ravenhall was a beer retailer at 115 Pritchett Street from 1916 through to 1923. After consulting my husband who is a professional photographer, he said that he thought the picture is genuine because the negative may well have suffered exposure damage and with age, if not properly inside an envelope, could have produced this fading and obliteration of the word Mitchells. Also if the pub was renovated from two dwellings into one, the new brickwork would account difference in for the sign would be done afresh. Also it would be hard to superimpose the sign over the lamp hanging on the wall without it showing. here is another pic of gt granddad. Thanks to you all.