I recently picked these up:
I know the contents of a few, but the rest don’t have much information:
Ho-Oh pack was given out for attending the premiere of the 20th anniversary movie, contains the shining legends Ho-Oh with a unique stamp on it (Unlike the JP version, this stamp is the name of the movie, not the set):
Darkrai pack was given out for another movie premiere, contains this stamped promo:
The Zeraora pack has a promo with a korean-exclusive artwork + movie stamp:
(for reference, the JP + US prints have this art):
I’m assuming the Armored Mewtwo one contains a Korean version of the card.
I have no idea what the others contain (I’m hoping they’re stamped promos as well!). I primarily collect promos with unique stamps on them, so I was wondering if anyone else knew if the cards inside looked different than their US / JP versions.