I don't think it's quite Mint State, but pretty close although it might be just a typical New Orleans weak strike. Maybe AU-55. If it's determined to be uncirculated, it might go MS-63 or higher; I don't see any serious detracting marks on either side. Is its luster as flat as it looks in the image? If so, it might have been dipped.
As usual, I haven't looked at the other posts. Sorry I'm a little slow getting to this Morgan; I just made another move to yet another campground, always a time-consuming process.
Fred