>>54806336It doesn't have Miraidon on it, because it was a hint to the next games, akin to the strange souvenir. They wanted to make it recognisable, not break NDA to slap an image of an upcoming pokémon they knew wasn't included in that game to alert people what was coming an ruin the surprise reveal.
And logically, it makees more sense for a 100 yo copy to be plain-bound and ones in the modern having more fancy bindings, because mass-production of imaged copies became cheaper as humans advanced their processes.
The pokémon world is an analogy to ours - thus shit like printing and photography were at the same level of real-world human development at a similar point in that universee's history.