This fantastic item looks complete to me. It wasn't designed to have a bottom as I feel it was made to fit over a box of candy, probably made by Brach's. David is wise not to fold it up, since these were not designed to be done and undone. I bought mine flat, folded it once, and now it serenely sits in one of my many display cases.
Thanks for the shout-out about my new edition!
07/30 Update: This neat, fragile item brought $81, slightly below guide.