I recently bought a pen made by the Eagle Pencil Co. The cap and barrel are black with red streaks, almost like wood grain. I think I'm looking at hard rubber, here. The clip and cap band are really ugly looking. At first, I thought they were badly corroded. After a good squint with a microscope and some very careful shaving with a sharp knife, I found the furniture is gold plated. Someone painted the metalwork with something (shellac, lacquer, varnish?) and it has turned an ugly dirty black color. The coating is very uneven, so I don't think polishing through it is going to be an option. I am thinking about trying to strip the grunge. Naptha is probably a bad idea on HR. How about lacquer thinner or denatured alcohol?
Paddler