Okay, this one is genuinely troubling from a coding perspective.
Our copy of this book has 76 pages. The problem is that 48 of these appear twice. The last 24 pages of this books seem to have been included twice. The GCD reports this as 52-page comic book, and, indeed, aligns with exactly what we have here, except that we have some of it twice.
I would call this an error and disregard the second 24 pages except for the fact that this is a squarebound comic and all of the binding looks exactly aligned, as if it was supposed to be a 76-page comic (which would make sense, as it is a special edition centennial thingy). So, we’re filing this under “I don’t know”.
The writers of the stories here, by the way, are Warren Ellis, Alan Moore, and James Robinson. So little seems to have been written in the scholarship about the overlap of Vertigo and Harris Comics….