Was it Shining Mew? That was the May edition of Corocoro, but not sure if anything came after.
Chronologically speaking, I’m not too sure what the last promo release was because I can’t find exact dates for some of the 2001 releases before the change of backs.
Any help would be really appreciated, thanks.
I’m pretty sure @pfm is indeed correct. Especially because it was released, alongside the promo below, to celebrate the transition from the old back and old layout to the new back and new e-Reader layout.
As you can see in the quote in pfm’s post, it mentions “These cards” (plural). The other card that was released simultaneously was the 027/P promo: