It looks like the sphincter in the machines from the War of The Worlds with Tom Cruise.
I don't mean that in a disrespectful way....If aliens used an aperture to seal out space.....
I digress.
o Be a killer top for a trash can?
o It could be advertised as an accoutrement to a women's restroom door. Might be a good seller to the yoots of our nation?
o It could hide a mirror?
o Frame a corian carved lithopane?
o A photography store would have to own one!
;-)