I got a chip from a fellow collector (PD-AK). I thought it was one that I already had. I was just going to compare it to my other chip to see if I could end up with a condition upgrade. I noticed right away that there were some differences. The spacing and size of the rings is different and the overall distance across the design is not the same. The design is identical on both sides of each chip. Has anyone else noticed this difference? The devil is in the details.