Can acetone take that off? The coin may have been cleaned before. What is that whitish area between the top 2 stars on the upper right obverse? That discoloration doesn't seem natural to me. There is very nice detail in Liberty and her hair which is difficult with this series.
Could be. It was in a PVC flip when I bought it. I don't know. I haven't ever experimented with acetone. That area looks normal in hand. One of my lighting sources was positioned at 1 o'clock.
Your coin looks like it was cleaned once before. As for the green, it looks like PVC residue to me. Not sure of the best way to deal with that.
Yep, PVC and the heavier spots are verdigris. Here is a thread that I started a while back. How would you treat the Verdigri? | Coin Talk PVC is easily handled with a couple of dips in consecutive clean shot glass's of acetone. Heavier PVC contaminations will take more, I roll a qtip across the surface, use a new qtip with every application, never rub and use the acetone in a well ventilated area. Honestly it is as easily used as distilled water, as long as you remember to use it outside or with good ventilation. Windy conditions will make acetone evaporate much too quick.