The spec looks a bit bland. I would recommend experimenting with creating a layer of noise and running some filters on it to get subtle fractal patterns and variation, and overlaying that on your spec map so that you'll get some variation on the spec hits.
Remove the photos and prices from the spec. The glass/plastic on the sign at the top is what would give the specular highlights, not the image underneath. The poster would have more specular on the thick black ink lines if anything.
Still slowly picking away at textures! Most recent screencaps from Unreal and my diffuse/specs. Aside from the usual scratches and grime I've added a sticker to the bare side to break up all that gray space and tried to vary the color of the pump handle a bit.