Stopped in at the local coin club show today and had to pick up a little something. Small show, maybe 20 dealers. Saw a lot that I wanted but showed some restraint for a change.
It's not on the outside of the slab. Under the strongest magnifier I have it appears to be on the coin. I don't see a reflection of it off the coin but it seems to be slightly a different shade of frost. I would have to break it out to find out.
I was just wondering as that area should be mark free and I could not tell if perhaps it was a die chip or something. Not worth breaking out.