http://www.ebay.com/itm/1921-UNC-MO...942516?hash=item4657ee4034:g:HMEAAOSwnbZYFN0f It's not easy to make a 1921 Morgan acquire target toning....
If his work was "good," then it would be in TPG plastic. The TPGs have done an excellent job of slabbing highly questionable/borderline coins and blurring the AT/MA boundary.
You know Freud would say" this sellers obsession with baking coins was most probably due to his parents not allowing him to have a Kenner Easy Bake Oven as a child". "So his desire to bake coins comes from his feminine side of his cerebral cortex ." That gives him the stimulus he needs to also deal with the disappointment of not receiving a Barbie doll as requested in his many letters to Santa.
I'm having a hard time believing that coin was "UNC" even before it was cleaned and AT'd. I guess it was UNC before it was circulated, then cleaned, then AT'd.