Getting there. Oddly, this has a fair amount of rust on it, chips, and dirt. The ivory paint texture is getting close to the heavy-coated orange-peel seen above.
There's not really bolts there, but it's fun.
There are: 4 textures, 1 bump-height map, 1 specular map. They are 4096s.
(I cleaned up a few posts and extra pictures.)