I agree but the Obverse appears a little better! The "LIBERTY" on the Shield appears funky and almost unreadable and I believe that this may more explain the overall appearance of the coin. It was apparently struck with Late Die State (Stage) Dies, that look to have been repaired (ground, polished and possibly tooled) several or more times to remove Die Clashes and other problems and would somewhat explain the weakness of the Strike. There appears to be left over evidence of Die Clashing on the Reverse and there appears to be several Die Cracks as well on the Reverse.
I'd say it's definitely AU. As for the cleaning, I don't know. I'd have to look at it in person to determine that. If you look at it under a light and see many hairlines, then there's a good chance that it may have been cleaned.