Since I started photographing signs in 1983, I have been impressed that no one ever put graffiti on any of the signs regardless of whether they were on existing buildings, construction sites or demolition areas. The most I had seen was four chalk marks someone had drawn in the ring of a letter “O” to make a face out of it. The graffiti drawn on the Dunlop sign is a very recent exception. The Mobiloil sign is untouched. – John Hunter