I picked this up today based off this rather lousy photo. I am betting that the photo lighting distorts and expands the denticles. I am not even 50/50 on this one but I thought I would take the chance.
Hard to tell from that photo but I voted Small. Increasing and tweaking an area without as much reflection, there seems to be a wider space between the denticles then on a Large. Hope I'm right in this case. It would be a nice pick up