I'm going to agree with the mid-high AU opinions given, for two reasons:
1) There's a sharp difference in contrast/luster between broader and narrower areas of the fields; it's most noticeable on the obverse image at the E and M, where the most-direct lighting plays on the fields. That, and the stain on the date, are things which happen in circulation.
2) This is one of the very rarest Morgans in Mint State condition. A $250 coin in AU55 becomes a near-$10,000 coin in poor Mint State condition, yet AU's are quite common. With these somewhat-small images preventing a certain opinion, one defaults to the most common probability.