Please let me know if I need to take a pic at any different angles. And this is as close and focused as I can get.
Could be a chip, hard to tell, but I think deterioration is more likely blending into the edge, but doesn't really look like a RPM.
Put some light on that mint-mark, so we can see it better . The ends are to dark to look for split serif
Attached is a photo of a photo from Wexler/Miller's The RPM Book. Your mintmark looks the same to me, note the short faint die gouge center left in the field next to the S. You can see it in Ricks chropped image of your photo. This looks like an RPM to me...it is too early of a die state to be deterioration. The mintmark position is also the same. Larry Nienaber
The best part, as we can see, no 2 look alike, all are some what different, one way or another, but they all end up in the same RPM ..
Nice RPM ....die chips and die deterioration seems to be the run of the mill answers to the non variety collector here. Very nice score pretty toning too. Congrats . "Nice call Rick"...... glad to see you were on call!