Removing possible PVC contamination on copper/bronze. Acetone?
I purchased a 19th century bronze/copper medal on the bay. It just came today but unfortunately it was stored in a PVC holder and the medal has that plastic shower liner pvc smell. The color is RB. I've soaked many silver and nickel coins in acetone but is acetone on a copper a no-no? Any other alternatives. I have some Verdicare but not sure if that would remove pvc. Thanks.