If there is substantial value, I work at Stack's Bowers and would happily help you along the consignment process if you wish to go that route. Shoot me an email through my profile if you are interested.
There is no doubling, but rather weakness in the strike as mentioned above. With the chasm of the cud filling with metal when struck, there is not enough material to fully define the dentils on the other side.
There is no displaced metal, and the texture is similar to others of that error. 100% strikethrough, and nice find at that! Pretty significant for a Morgan Dollar.
The R in LIBERTY to the hairline was the first point of reference. That narrows it down to S-8, S-9 (both obv. 9), and S-11 (obv. 11). The reverse distinguished by the wreath leaves underneath CENT. There is one leaf centered beneath the C, and two leaves spaciously positioned under the T.
The obverse leaves would have been the easiest attribute but they are indistinguishable on your coin.
I would recommend NGC conservation services but I do not know if they have an early copper specialty. They have been reliable otherwise so it may be worth a try.
Your coin is an S-11. But there are three sub varieties attributed by edge design listed below: S-11A: Vine and bars edge. R-4+ S-11B: Lettered edge with doubles leaves. R-4 S-11C: Lettered edge with single leaf. R-3-
Quote: Looks like my 1862 trime was struck suing the same reverse die as the 1860 coin!
I don't think you can make this conclusion just based on a die clash. Any series shows repeated die clashes. The reverse on the 1860 has a clear die crack traveling from both sides of the olive branch, and into the large C in the design.
Your coin, produced two years later, does not show that die crack. Additionally, the 1860 is a late die state showing clear signs of deterioration while your coin is a crisp early die state. Not the same reverse die used on both coins in my opinion.
Looks like a beautiful AU-55! I don't see any kind of cleaning. The dramatic lines are the result of single lamp lighting. They are common circulation hairlines. Shot AU-58.