[jocko]

Special Paint usually means a special mix for a company fleet or, more often than not, a different GM color that isn’t normally offered as an option on the vehicle in question. The Special Paint code itself isn’t something one can decode down to an actual color. This one sure looks a lot like 521 frost white though, so it’s a little bit of a head scratcher…. Very curious what the truck was originally purchased for. I assume done so by a company or municipality or something like that - but a 6 cyl 1/2 ton swb chassis cab is pretty unique.