Nope. Typical for an unchromed brass grommet. I have a few drums that look identical in that area. And I will bet a ten spot it is paint. Any takers?
I don't think I'd bet against you on an XP topic John, but if it is paint, I don't think it was an effect. It could be paint that has been rejected by the laquer finish; but those badges are stick on and it looks pretty settled on the shell to me. You saying that badge has been removed? I still think it's the finish falling off, myself. The thing I'm not sure about was if those drums were finished in nitro or poly. Poly doesn't really do that. Nitro does.