I guess the 1921 had 4 rays as well.
Found this on line reverse looks just like your coin. https://coinweek.com/counterfeits/counterfeit-coin-detection-the-1928-peace-dollar-part-2/
You bet.
Sorry you are learning in this manner but this will turn you in to a better hobbyist. Sometimes if I am looking at a potential hole filler and it...
The rays also look a bit too thick.
Separate names with a comma.