Here’s a small compilation of previous threads made on the matter with pictures showing the holes on other packs/sets for anyone else who wants to read more about it:
www.elitefourum.com/t/what-is-this-called/16781/1
www.elitefourum.com/t/factory-holes/21975/1
www.elitefourum.com/t/help-these-packs-look-resealed-what-do-you-think/17088/1