Bought wallpaper from Play Store, can't find it on phone. Where is it?

If this is the "stupid question of the day" I apologize, but...

A couple of months ago I bought a wallpaper from Play. It installed correctly (I think; at any rate Titanium shows it), but I haven't been able to find it. Obviously this hasn't been a huge priority for me, but I've searched my phone, looked on line for answers and haven't come up with anything.

If I long-press to change wallpaper, it's not in the selections. It's not in the Gallery, or in any folder that I can find. I've searched the whole file system (again, I think) with Astro. Not a big issue with me, but a little strange.

Does Play Store download wallpapers in some strange place that I don't know about? Where might it be? What am I missing?

 

Hmph. So I flashed a new ROM last week, right after I wrote the OP. Downloaded the same wallpaper as before, and bingo, it was right where you'd expect it to be.

Weird, huh? Thanks for the advice tho, Tink ;-).