Well thanks, Randy, I appreciate it. Just don't ever overdo it because they can go black real quick when exposed too long to sunlight, even from just sitting on a window sill. It's worth a try on this one after the acetone soak, though, I think. If anything, it may age better for it. That's the idea, anyway. See if you could revive the surface, get it working for the coin, aging, instead of just sitting there, stable, going nowhere, the way it appears to be right now.