It might be an RPM but the rest of the coin that showing is damaged:
Welcome to CT. It looks as if it was painted with an acid.
Missed it by 1.
What, don't you see Lincoln standing? Lol
PF-66
Wish I could find some 2020 rolls of anything. Very nice looking but keep a few rolls unsearched.
The coin has some small PMD spots but the area you are referring to looks like a small detached lamination.
Nice and that's my birth year.
Looks normal to me. It's not missing a letter, that's an N., as in North.
You can call this one PMD as it's damaged.
I'm not seeing anything special but it is clean for its age.
Nice but not a Doubled Die.
Blurry and small photos so it's difficult to see. I can say that it's damaged.
There are so many possibilities that Zi can't name them all. Several have been mentioned already.
X2 It's the Lincoln Memorial. Every time I've been Lincoln is sitting in a chair. To me what you describe is normal.
Nice Die cap strike but a shame about the spot under LIBERTY. Congrats on this find.
What a wonderful set to have!
Very nice pocket change!
I'm afraid you overpaid but not by a large amount. Live and learn.
Just stains and circulation wear and tear.
Separate names with a comma.