It seems that the acetone step would remove pvc if thats what it is and the case settled there right? Vertigris wont come off with acetone. Yet...
So you " know you can remove the contaminants safely" ? As in vertigris or pvc? Or you want to turn the coin into the beauty within?
Soak the brick rolls then rinse open then sun dry coins. Residue rings will form. Hard water rings form. Track the cycle.
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