This is a 1928 D Peace Dollar that I am grading for a friend today along with a number of other of coins. As I considered the field of this coin I noticed some scratches on the obverse at about the four o'clock position. I looked at it under the 7x loupe, but wasn't satisfied with the magnification, so I got out the USB camera that is 6x magnification.I haven't ever heard of a Peace Dollar with a chop mark. I tried to look that up on the internet, but came up empty. So I have two options to consider: Is it authentic or is it a faked chop mark? Would love to hear you all weigh in...