sounds like some kind of 7th print. If it's something that's being sold on your site, I wouldn't worry about being too specific on this since I don't think you'll find any buyers that are so picky on these later prints.
btw, just for the site's use, maybe take a photo of the back cover and post. At some later point, I'm sure if it's a different iteration of one of the prints like the 7th, it'll get incorporated into the
MM list
