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Message:: [QUOTE="GDJMSP, post: 7830683, member: 112"]That's kinda what I though. That black crud, and I mean all of it that looks rough and bumpy, not just what I circled - [ATTACH=full]1345464[/ATTACH] - that's been caused by corrosion, and nothing is gonna fix that. The rough and bumpy texture, that's what copper turns into when it corrodes. The black color and the texture is caused by toning in its terminal stages. Toning is corrosion. You're never gonna get rid of the texture short of wearing it off or sanding it off. You need to think of it just as you would like rust on a piece of steel, because in effect that's exactly what it is. Only it's not steel rust, it's copper rust. Now if you were to dip the token in a commercial coin dip, the black color would go away leaving behind pitting and bumps. But the whole coin would change color significantly, kinda like this cent did when I dipped the bottom half of it - [ATTACH=full]1345469[/ATTACH] You said MS70 lightened the coin's color, well that's because MS70 is a mild coin dip. What you see above is what full strength coin dip will do. But yeah, it'll take the black color off. But it is also the only thing that will take the black color off. You can soak that coin xylene for years and it's not gonna do anything. And I say xylene because you shouldn't use acetone on copper to begin with - it can sometimes turn copper weird colors. And by the way, for those reading this, you should never use MS70 on MS copper because it is notorious for turning copper a bluish or purplish color. On circ copper, it's a toss up as to what it's gonna do.[/QUOTE]

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