19?? Lincoln Memorial Cent Struck Through Grease ?

[claudewill1]

I found the following cent. Between barely being able to see any numbers in the date and letters missing some LIBERTY there aren't any signs on the coin that this was done by a person. It kind of looks like struck through grease, I'm far from an error expert though I mainly just look for double dies and rpms. Occasionally I come across oddities and I am interested in learning about what it is so I will know if I see the same thing in the future. I looked on error-ref at struck through grease, but I'm not sure if this is it or not.

Thank you again for your input.

[SensibleSal66]

It's hard to say what's going on with the word Liberty but the rest of the coin is damaged by a corrosive.

[claudewill1]

WIth that being said, I can tell by looking at the coin how someone could've used acid or some other corrosive on the coin. Thanks.

[Daniel]

Looks like it was struck through goop (grease), it doesn't have to cover everything.