1953 s/s?

found this also

 

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I think is this one.:thumb:
but to be sure check out all the markers list here.http://www.coppercoins.com/lincoln/diestate.php?date=1953&die_id=1953s1mm003&die_state=lds

 

Looks like an RPM North.

 

Yep, looks good to me. Nice find.

 

1mm-006 ?

 

Thanks