your title suggests that you think you have a RPM, while your text suggests you have an error. a re-punched mint mark is a variety and not an error.
in any case I think you have MD ( Machine Doubling), it shows on the 9,3, and mimt mark. all in the same direction. I am not the expert here, and that is just my opinion. the "big - guns" should belong sometime soon.
additionally the 1MM-001 on coppercoins site, has split serrifs on the mint mark - which your coin does not have.
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