Help -- Uncoloring, colored coin.

I have a barber half which has been colored an ugly boxcar brown. What lies beneath is likely tooling or some other undesirable attribute. Looking for some suggestions as to how to proceed. Thinking of trying 100% acetone but maybe there is something better. Thanks.
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Comments
You might be stuck dipping out and losing luster or be happy with present color.
If there are problems under the toning why do you want to expose them?
If it's something like tooling you should be able to see it without removing the tone.
Unless it's been painted acetone won't faze it.
If you use coin dip you will probably ruin it because dark coins ARE NOT good dip candidates.
You are probably trying to ruin an original Barber. If I saw a picture of the coin I could advise more but I will say very few coins are actually improved by attempts to improve them.
not everything is "perfect".
K S
Since we're not sure of how it's colored OnlyBuffalos might could swish it around in some acetone or MS70 and maybe if he's lucky somebody had painted it with a magic marker there's a slim chance he could save it.
If that didn't work he could dunk it in the JeweLuster but as dark as it is it would probably come out dull grey & lackluster and be even further damaged.
I thought you'd like a little photoshop foolery. Here is a negative of Dog's image.
and it sets us apart from practitioners and consultants. Gregor
leave the coin alone, if you don't like it, SELL it as-is, & get 1 you like.
K S
I've never tried the baking soda trick but that might lighten it some.