I snagged this coin off EBay for 99 cents. Not really anything special, but it had no bids on it with 5 mins left so i said what the hell as I needed a 35-P for my album. Anyway, as you can tell from the pics, there are spots on the obverse and 1 tiny spot on the reverse. The spots are slightly darker when viewed in natural light. The coin came in a small flip. No idea if this is PVC damage or not. What do you think?? After looking up close with a magnifying glass, i'm thinking it's a cleaned coin as well?? You'll notice it's not hazed up around the "IN God We Trust" motto. Oh well, it was only about $2.50/shipped
Can't say for sure, but my guess would be it has already been dipped and those spots are what the dip did not get off the coin. I don't think it's residue, but could be wrong. Anyway, I would not dip it again.
GDJMSP is right, any re-dip would make the coin very artifical in appearance. but, it was only 99 cents.