I am quietly putting together a PCGS certified
Peace dollar set ... so have seen in hand many PCGS coins and learning how to grade the series recognizing the strike challenges many of the 24 coin series faced.
Truly tough to grade from a photo ... great coin BTW ... the 1928
Peace dollar is for sure one of the keys to the series.

Still see some luster but the obverse has seen obvious circulation wear. The toning does not bother me for technical grade ... but the bag hits on the obverse central features do.
I say PCGS AU55.

Compare FWIW to my 1928 PCGS MS64
Peace dollar ...

Thanks for sharing the great coin ... looking foward to learning how PCGS graded her.
David
Take a look at my other hobby ...
http://www.jk-dk.art