Here is a book that I've been seeking for quite a while. It is the Green Printing Error Variant of Fantastic Four #110. I recall Metropolis Comics had a VF-ish copy on their site for a long time for around $30. Of course, by the time I finally decided to pull the trigger it was gone. So, I searched eBay everyday for about 6 months before I found this copy to bid on. It was listed as a VF+ 8.5.
It is a really sharp book that appears to be a 8.5, but, there is always a "BUT"... at least where I am concerned.
There is a clean vertical staple tear running parallel to the back side of the bottom staple. It's like the staple actually cut through the paper when it was being stapled. Thankfully, the tear lies flat and is difficult to see when the book is closed and the cover is still firmly attached at the top and bottom staple.
Does anyone have experience with this type of flaw? I don't know if I would call it a "popped staple" because it still holds down the cover and has not completely popped free of the cover. Is it considered a production flaw? Given the great condition of the book, I don't think this happened through mishandling, more likely it happened when the book was stapled.