For those who asked... the first sign had silver paint with maroon paint over it. I used two applications of paint remover and then cleaned it up with Bon Ami porcelain cleaner.
The second sign was tar. I used a razor blade to get the majority off, then paint thinner which softens the remainder of the tar and removes some of the staining, then I followed up with Bon Ami again.
-Steve
Last edited by Speedracer; Sat Jun 09 2018 02:37 PM.