That's damage from a coin rolling machine as stated, very common.
X2
Acetone is fine but it needs to be an industrial strength, not nail polish remover. Please do some research before doing anything.
I mean I've never heard of Pistol Pete, the race car driver, the Atlanta Hawk player or the Pistol Pete's Pizza.
Did he start Pistol Pete's Pizza? Where are they located?
Those look like laminations to me.
Never heard of Pistol Pete.
Of course there is a tolerance.
It's a spender.
X3
Don't clean your coins. Leave them be. Just plug your holes.
Glad to hear that.
In a single word, yes.
It all looks normal to me. Welcome to CT.
Damaged
I bet you were delighted. A great find.
Looks normal to me.
I believe so.
After you read this you can tell me. https://www.coinworld.com/news/precious-metals/rolling-fold-is-a-distinctive-form-of-planche.html
I see said the blind man to his deaf dog.
Separate names with a comma.