Uncharted 2 Folio question about seal

[Veggz]

Hello everyone!

I got something real special in the mail today, I swore that I would never buy this, but I got it incredible cheap so of course I had to buy it. It's the U2 folio artbook.

My question is, did this come originally with the book sealed? I thought only the cover for the book was sealed, and not the book inside. Mine came with the book sealed, so I would appreciate if someone knows something about this

Also, is the certificate of authenticity located inside the book? Haven't seen mine, but haven't opened the seal yet. Kind of scared it is lost haha.

Anyways here are two pictures of the sealed book, and thanks in advance for any help