I assume the content isn't as important as the fact the object itself is the original. Original paper, original ink, original release date. The object itself comes from the original factory, survived through time etc. I would expect some tests will verify it uses the correct paper, has the signs of age, etc.

Even if you could duplicate it down to the molecule I would assume it wouldn't hold the same value since it doesn't have the same history. Assuming you'd want to sell it in good faith as a replica.