Not sure if this is an RPM or what. The hole on the D on this coin is smaller than what varietyvista's example for 74D RPM.
I wasn't able to match it either with that being said I'm no expert on (RPM). IMO @Rick Stachowski Dave
Hard to tell from these images . So check out this one . http://www.coppercoins.com/lincoln/diestate.php?date=1974&die_id=1974d1mm008&die_state=mds