Newbie here, hoping I've got something good?

Looks like environmental damage.
Here are Metal Detecting examples from my stash..

 

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These are Improperly Annealed "Black Beauty" Mint Errors from my collection..

 

wow when you said" you didn't know anything about Cleaning a coin, I thought UH-OH here it comes". NEVER clean a coin unless it is mud covered or something along those lines. I'd hesitate on buying a "cleaned coin" unless it was a very rare one or I could get it for nearly face value. Research cleaning coins and see what is written by folks that collect/sell for a living.

 

In the original post, notice how it isn't just the LI that is on the edge, but the date is also closer than usual to the edge. Die deterioration doubling causes the perimeter of the coin to be expanded from the center towards the perimeter as the die spreads outward from overuse. IMO, Jim