Looks like shadowless pack artwork, you’re 50% there. Can you see the pack seals? Look toward the top inside the box and you should be able to tell whether they are long seals or short seal shadowless packs.
Edit: I updated the thread to better describe what I’m referring to.
www.elitefourum.com/t/identifying-shadowless-unlimited-base-set-boxes-packs/16993/1