Please tell me specifically what I am looking at and for.
That is really awesome! I really wish I would have been looking for this back in the day. I know that in a 3 year span, I looked at well over a million halves and never looked for this. I did find the 88 rotated die, a ton of DDOs, and wasted a bunch of time looking at the fg initials on the backs of certain years. I also waisted a lot of time weighing coins hoping for an incorrect planchet. If I had it to do over, I would have looked for cuds and clashes.