I'm going to say it was either affected by extreme heat or it was dipped in acid but not for a long period of time. If only one side would of been affected then I would of thought Struck through a capped die. But that's a different issue.
Except that doesn't really explain like above the "We"... Least not to me anyways. I see several of the tops of the "W" mostly. Especially in the second picture.
This coin came from a full book of Lincolns that all look brand new. Got it for 5. The lady said that her father passed away and she doesn't have any use for them. I said well, okay then. Thank you.
It is unusual looking, but I suspect it was tumbled, either mechanically like in a dryer, or a rock tumbler, or even environmentally, like if it spent a while on the beach in the surf, but ... I don't know for sure. I reckon @paddyman98's theories about heat or acid also sound as reasonable as anything I could think of. But either way, we're almost certainly looking at post-mint damage, here.
That was my first thought when I seen it was extreme heat. It's getting replaced as well speak with a nicer looking undamaged coin. . I didn't even think about tumbler but that sounds like it could be as well. Thanks y'all.
Weighed it just in case anyone was wondering and it's 3.1 g. Figured it would weigh less to be honest.