Panini wants to make sure that's not going to be something that you can say about the new Donruss Optic set.
In hand, you can faintly see the lettering below the "stamp". It's not really a stamp, it's part of the card design, I just can't think of a better thing to call it.
It is actually my first card of Sterling Brown.
I still have most of my blaster of Optic waiting to be opened, maybe I will pull the base card at some point.