To me, that looks like an old detached lamination on the rev. For damage, I see a rim ding at 1 o'clock on the rev plus a recent scratch, most likely from a staple when someone was removing this coin from a 2x2 near the date.
"If you climb a good tree, you get a push." -----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz