Coins in this range, it comes down to how much luster is left. (IMO). I think the luster must be a little better than how many of us read it in the pic.
Yes it is very hard to judge luster from static photos. I guessed 53 as I thought there was enough loss in the fields to justify that. I think in the future if a coin looks AU I will just guess "choice AU" and leave it at that.
Well son, that's because you are too young to understand. We used to use actual standards, not these podunk market feelings. One day you will learn.