Visually intriguing (at least for me), might look interesting in large print. Question; did you increase the contrast to this point ? Eliminating all grays ? I think it was a good idea
I'm not sure the actual age of this particular wall, but it was across the street from a house that was built in 1625. The wall surface and the house surface are both of coquina stucco. The graffiti is scratched into the surface of the soft stucco, so over the years the weather makes it less visible with less contrast. The original was barely discernible, so in answer to question, yes the contrast was enhanced, but more importantly the blacks were darkened and the whites lifted, by channel in the curves module then moving my black and white point in the RGB.