1900-O Morgan

My guess is 58 due to the wear on the eagle, however it could just be a very weak strike. It would be quite odd to have a weak strike on the obverse and reverse, but I'm no expert. If it's a weak strike, it could go 66.

It's... hehehe... Striking. The fields are beautiful.

The die crack across the top ought to be a dead giveaway for a VAM for one of our experts.

Coins can be more challenging to grade from scans especially in AU and up. These are the grades that luster has some effect on grade. With that said, your coin looks like a beauty. It looks like marks are quite scarce on this coin. The coin could have a touch of wear which would make it an AU-58+ but a very nice one. My feeling based on the overall look of the coin, is the weakness in the breast feathers is from strike. I think this coin could grade at least MS-65 and possibly a MS-66.

What's going on with the neck in the seven o'clock position?

cinemabon, that's normal

Funny what jumps out at you when you start grading coins, eh? Lighting can help you see thing you never noticed before, and a skeptical eye is critical to train well if you're going to improve your collection.