It's a tough call based on these images; although it could well be a Mint State coin, my gut tells me you're correct in believing it's AU. Better than "low to mid," though.
That patch of brightness isn't uncommon on 1921's. I've seen more than a few with such a feature in that area, including Denver coins. It's an anomaly, but not VAMworthy on its' own.
That patch of brightness isn't uncommon on 1921's. I've seen more than a few with such a feature in that area, including Denver coins. It's an anomaly, but not VAMworthy on its' own.


























