1858 Seated Liberty Half

AU50-53 sounds about right.

I would guess XF-45 details/cleaned

I can't seem to see the cleaning either.

I like AU-50 Cleaned for it. Here's my thinking process when concluding it's been cleaned:

First, color cannot be the determiner in a photographic evaluation. Cameras differ; lighting differs. I'm willing to bet I can make *any* coin look "cleaned" with the right lighting. So, you have to think about other things.

No cleaning is perfect. If you had to clean the coin, it's because there was enough crud on it to make you want to clean; unless you get out the Dremel, something will always be left behind. This coin shows the telltale of that process most in the crook of the left arm, above the right shoulder and on a couple of stars. On the reverse, near UN, ICA and especially the rim from 6:00-9:00.

Also: Look at the "halos" around some of the stars, and note the toning just beginning to the right of and above the foot. These are indicators as well.

Furthermore: It's just plain difficult for me to imagine a 150-year-old coin accumulating just a little crud in just a few areas, while some of the tightest areas of the coin remain perfectly clean.

A lot of little things, all adding up to a near-certainty. My conclusion: this coin was cleaned, but not "invasively." It was likely soaked for a long time, and the cleaning was 97% successful. Just a little remains, enough to throw me off.