I'm sorry, but I personally disagree with the use of a comment like:
"Some additional defects these cards may or may not have: edge wear, pin holes, general storage wear, writing or tape on the back, tiny tears, stains, dirt, etc."
in an item description.
IMHO, any damage like pin holes, writing or tape on the back of the poster (which isn't going to be evident in the pictures since you only show the front), tears, etc. should be explained in detail in the description for that particular poster. It's one thing if you can clearly see the damage in the pic (like a missing piece of paper, or a tear), but if there is significant damage to a poster, it should be explained in particular. Not "it MAY OR MAY NOT contain..." - which is meaningless.
I know that if I purchased a poster and found out that it had writing all over the pack, tape adhesive, etc., I wouldn't take "well, we sort of told you" as a reasonable response.