Collectors edition/hardback game guides

[imironmann]

I've never really looked into it before but how do you know the difference in 1st or 2nd edition Skyrim guide?

I know with a regular book you can usually tell by the numbering sequence on the inside.
I have 40+ autographed first edition books but thats got nothing to do with VGs.

My Skyrim guide is still sealed so I can't check it that way. The person that sold it to me claimed it was the first edition.