Posters are usually sold rolled up. That’s perfect for toting them home from the venue, but not so great for long-term storage. It can cause wrinkles, tears, and other damage. So, if your poster was stored rolled up, we recommend flattening it and storing it in an acid-free portfolio or mounting it on an acid-free self-adhesive mounting board. Steer clear of cardboard, as it contains acid, which could discolor the poster.
Be on the lookout for acid when it comes to mounting the poster as well. Typically, concert posters should not be dry-mounted but rather hinged to a mat board with an acid-free linen tape so you can reframe the poster without damage, especially if it is signed.