Each book is contained in a stamp size mylar pouch, attached with archival photo-rated mounting squares onto to a Silver size 60pt ComicProLine clear backer board so both sides are easily viewable. It is also inside a Mylites 2 Silver size Mylar.
All books appear to be unread/unopened. The bindings are known to be very fragile and well-loved and these are very nice copies.
Sorry for the weird reflections in the photo. See scans for more detail.
More info: https://taint-the-meat.com/2017/01/16/marvel-mini-books/
An excerpt from the above site:
"..they were acknowledged by the Guinness Book of World Records as the smallest comic books ever published. Secondly, the covers came in six different colours — blue, red, orange, green, yellow and pale green — which makes them one of the earliest examples of variant cover marketing that are now common place in the industry. And lastly, keen-eyed reader’s will spot the appearance of a certain caped superhero at the end of the Spider-Man story, a full decade before the official Superman vs Spider-Man team-up of 1976."
Let me know if you have any questions. You don't see a full set of 6 like this very often.