Got it. Reading the blurb on this coin; it appears that these coins had to be purchased at the world fair of currency, or whatever is was, in Chicago in 2015. Then the coin could be taken, with receipt, to the NGC booth and be able to get submitted and this label is what you got. That is what the NGC site says about it anyways.
In a scenario like the above mentioned I wonder how many PF 70's were produced/Graded/certified? Think I paid about $55 for it 4-5 years ago. I bet its worth millions by now. hehe