So I found this coin when I was looking through some pennies from the bank and it is definetely different. Look at the Mint Mark and then compare it to the other one. I looked at 8 1969 D's and found only this one with the mint mark so low. Is it worth anything? Is it common? Does anyone know what this is? Please help. Thanks!
This is the error coin in question.

This is a regular 1969 D

Thanks!
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