It's hard to tell the grade with those photos. But IMO It looks unmarked and If you can't detect any wear then send it in. I'm not sure if that's a rim ding or just discoloration by the U in UNITED on the reverse. As you probably know, the Peace dollars are hard to grade because of their weak strike that may appear to be wear. Good luck if you submit it. Bruce
It might just be the pics but it doesn't look original, (cleaned) If it is just the pics, and it is a nice original coin, then I'd say this makes AU at least. In AU50 it is a $450 coin according to numismedia. With the pictures you have provided it is hard to grade, and hard to say if it is non altered, so at the moment no grade and I wouldn't send it into a TPG.
Yeah like I said low battery made my pictures alot to be desired. This coin is a NP coin... but like anything in life you sometimes only see what you want to see... thus its nice to have a 3 rd party give their opion! Paddy