I'll post a photo of the book in question, but I first wanted to know what the definition of a "stain is per CGC. I sent in three key books and the one that I thought was the best condition, ironically, was graded at a 9.0 while the other two were graded at a 9.8 and 9.6 respectively. Grader's notes mention a stain in the upper right hand corner of the book. I stared at the area in question under different light sources, with and without a magnifier and have asked other people to look and I/we could not see a "stain." There is no discoloration in the area; so, I'm stumped.
Compared to other 9.0s (same book), mine doesn't have any of the apparent visible flaws that the others that I have looked at have.... in any event, thanks in advance!
thesharkman