[quote=@SimplyJohn]
I think that's the point with all of them. Who'd guessed the worthless glass eye Chuck tried to use as a ruse would turn out to be a valuable magical artifact after all? At least it plays into his role, validating his (fake) story a little more.
[/quote]
But why a burnt book cover? Other than for the joke of having a book telling you how not to get burnt which got burnt before you could read it?