Hi Canada,
It's been digitally aged as an overlay to make it look aged. You will see what I mean when it arrives.
But if you feel that you want to take it even further, then I am happy to help you out on how to achieve this without ruining it. Unfortunately it would have added far too much time to age the entire 100 books and boosted the price up. I've tried to give the best replica I can, at the best price for all. I'm sure you will be super happy once you receive it though.
Also, the original has silver gilding on the ends of the pages, but I couldn't add this without making the price skyrocket. Again, I have products you can buy that you can achieve this for not too much money which I am happy to help you out with if you wanted to also add this.