Choice Almost Uncirculated, certified PCGS Details for what they called a 'cleaning'.  That might be, however anything done to this coin is no worse that 95% of all surviving 1920's Semi Key and Key dates.  No significant hairlines detected under 16X magnification and this retains obvious luster.  VERY well struck for a date that does not typically come that way, with separated hip bones and the split at the end of the tail fully visible.  My opinion is that this displays the detail of an AU-58 - the numerical grade shown in the Item Details is just to be safe.  Outside this holder 95% of people would not detect any 'problems' and I am also positive that 99% of dealers would not even suggest any.  I say crack it out and put it into an album page - 'buy the coin, not the holder'.