Any coin collectors on board?

Nice score!

If it is actually a proof coin: "Proof coinage means special early samples of a coin issue, historically made for checking the dies and for archival purposes, but nowadays often struck in greater numbers specially for coin collectors (numismatists). Many countries now issue them."

"Most proof coins are double struck under higher pressure. This does not normally result in doubling that is readily observable, but does result in the devices being struck fully. After being struck, they are separately and individually handled, in contrast to normal coins which are thrown into bins."

^ From Wikipedia.

On eBay right now, at $395.00 http://www.ebay.com/itm/1-1880-S-MO...ED-CERTIFIED-MS65-1880S-BULLION-/190747740810