Instead of shiny and lustrous, the coin looks dull and 'waxy' - also, the lack of any readily visible contact or bag marks anywhere on a raw Morgan dollar is highly suspicious
Still a bad habit. Anyone ever hold a "silver" coin lightly between thumb and forefinger and blow hard on the edge to make it ring?
It looks to me like it could be a real Morgan that was plated. That would explain everything you saw. However, I don't think it's an original Carson City coin. If it is a real Morgan, the CC was added later. It's not one I would think about buying.