2019 Lincoln penny with a mint fingerprint.

[Anita]

I found this penny in my collection, it looks interesting.

[mustbebob]

You called it right. It is a fingerprint, but there is no way you can say it is a 'mint' fingerprint. It could have come from anywhere.

[MintErrors]

I found this penny in my collection, it looks interesting.

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It looks like some one may have added some sort of caustic material to their fingers and then touched the coin. Once coins leave the mint and are in the hands of people who are mischievious or bored, a lot of weird coins are born from a garage.

[Anita]

Thank you for your opinion about my Lincoln Vampire.