Uploader comment: This was taken because my fiance and I are selling this rare print of Nicolae on ebay. We were checking our auction when we noticed a face on the bottom part of the book, between the title and authors' names. Then, we looked at it a second time and we saw a skeletal face in the right in the blackness. If you zoom in on it, you can notice that the skeletal face seems to be made of 'smoke'-like stuff.
If you look more closely, as we did, we've noticed a lot more faces within the skeletal face.