Can someone please help me and tell me how to fix this issue? A bought a bunch of nickels that were glued to some index cards and upon ripping the glue off with my finger nail, some of them have changed color and have, what it looks like, PVC damage. Is there something I can do to restore this? And does it de value the coin at all? Thank you.
About all you can do is a careful soak in some acetone. If it is glue residue the acetone should remove it. A careful soak, rinse with clean water [distilled would be best] and pat it dry, do not wipe it. Use pure acetone, not nail polish remover.
It's unfortunate, but keep in mind that you can buy an MS specimen for a buck or two. Experimenting on 'disposable' coins first can help you when you try to conserve a more valuable specimen.
