1964 Kennedy OBW Rolls

So I recently acquired three 1964 Kennedy OBW Rolls. One of the rolls was damaged so I opened it (also to confirm that they were all 1964 Kennedys. Inside the roll a few coins had this black flaky substance between the coins. This I lightly dabbed off with a dry tissue. However majority of the coins have all these little spots on them, I haven't seen any milk spots on ASEs in person but if I had to guess based on the name, I would say these are milk spots also. I opened the roll and immediately placed all of the coins in 2x2s. I have photographed the first, one in the middle, and one of the last coins using the iPhone camera. I'm sorry I don't have a better camera but I hope there is enough detail to help with my questions. The green obverse is absolutely bright green with slightly reddish tint too (I'm not sure how much is captured in the photo).
Questions:
Is the best way to remove the spots, dipping in acetone?
Should I remove the spots or leave them?
Do they negatively impact the grade if I were to send them to PCGS?
Does PCGS remove spots like this during the grading process if requested?
What is the dark material on the green-toned Kennedy?
Should I open the other two rolls or leave them wrapped?
Does the paper roll-wrap cause these milk spots or black flaky substances?
Pictures:
Having some difficulty with pics
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Questions:
Is the best way to remove the spots, dipping in acetone?
Should I remove the spots or leave them?
Do they negatively impact the grade if I were to send them to PCGS?
Does PCGS remove spots like this during the grading process if requested?
What is the dark material on the green-toned Kennedy?
Should I open the other two rolls or leave them wrapped?
Does the paper roll-wrap cause these milk spots or black flaky substances?
Pictures:
Having some difficulty with pics
1 2 3 4 5 6 7
0
Comments
Acetone might affect the toning, and it's too late to remove the spotting because the corrosion has already occured. Acetone might stabilize the surfaces of the coins, and it also might remove some of what you find interesting.
There is no harm in opening the other rolls to see if you have anything that looks good. You always can pick out the most attractive coins to keep, and consider then that the rest are bullion.
As secondrepublic says, there's no need to have any of them graded unless you find a perfect coin or a fairly nice coin with interesting toning.
I knew it would happen.