EDIT - After hunting through my wardrobe several times and posting this I found it.
Hard to describe. It's a black backdrop - in the middle it's white as if a spotlight is shining down so the HA stands in a circle.
It's not this? I feel like I know there's another one but since you said it's not the LS set....
That's the one - thanks for the help.. I'd put it in my Frame drawer the other day so it didn't show up when I was looking for things I'd put in backdrop drawers,