I was looking differences between the leather, first edition books, being part of BALG and current available editions. I came across youtube channel John Razimus Mysterialis Paranormal Investigation
where in one of episodes, the youtuber was talking about Book of Azazel. In the 9:30 he shows that there are sigils, that in normal way are invisible (I guess it’s the same method like police uses for fingerprints or blood samples in the crime place).
Anyway, do you know any other differences? Not only in that book BTW. It’s important for me, because I want to know if better is get more rare edition (with higher price) or standard edition (cheapier).