I was wondering how to get one. But it's not really an upside down picture or "United Stites" or something that is visible. That seems to dampen supra-numismatic value, doesn't it?
First we had, "Just plug the damn hole!"
Now we have, "Just print the damn cash!"
Some of the sheets wrinkled in the press causing blank spaces in the bill. That would seem to generate a deal of numismatic uniqueness.
Teachable moment for the press (yeah, good luck with that...):
This is not a $110Billion dollar problem, this is a problem with $110Billion of denominated currency. I'd get a warm fuzzy feeling inside if I thought any of them understood the difference.