I am thinking just black, Might have had some gloss to it similar to rear axle housing?
I'm not sure if Harvey's car had undercoating. I asked him but never got a response. On this post,(post #1) www.mercurycougar.net/forums/showthread.php?53528-Your-opinion-on-survivor-Status-please&=447198#post447198 he says the dealer spray painted the underneath black and that is what I was referring to. JohnYou mean dealer under coating?