I think you are right on the N-15 attribution. As best I can tell from the photos, there does appear to be the small defect on the obverse below the space in the 3 and 5. Also there does appear to be the designated cracking on the reverse.
Thanks everyone for your responses. I saw it at 35-40 and it seems that my guess may be somewhat accurate. I may send it out to PCGS - does that make sense? As most of you know I never slab coins but am thinking that my heirs may need my collection to be slabbed.