Gold - grading question
As I work on improving my gold type set, I am trying to understand grading better. The following three coins were all on a dealers website at one time, so the pics are the same quality. One of the coins was a 64, one a 63 and one a 64 CAC (#3). When I look at the coins, #3 seems to have the worst strike but maybe the best luster? By looking at the hair and eagle feathers, coin three seems to me to have the weakest strike, but I am not sure if luster sometimes softens the view of the strike.
Coin one seems to have a really good strike, but at the top of the eagle feathers(shoulder) it seems either some wear or lack of luster. Coin two seems second best on both strike and luster, but does have some marks in front of chin which were noted. Coin three, especially obverse seems to have a soft strike. Perhaps it’s the year?
Any observations or explanations on how luster and strike intermix to get a grade would be appreciated. It’s unclear to me why coin 3 has the highest grade and CAC.