Mine does have the sash within the box (with the same Mel signature in gold on the lid). I didn't check the COA but if you need me to do so, let me know and I am happy to do so (as long as it doesn't involve tearing anything apart). I don't recall if the sash came in the box or was handed out, but it might be worth checking if it somehow slipped behind the bagged towel.
The other items (pen, comb, tote, etc) were misc. souvenirs handed out during the convention and not specific to Atlantic City Beauty fashion.
I don't remember the red interview suit. What was that?
I had the pink robe at one time but don't know if I still do. I don't think it was produced by AD.
Gael