Was looking at that seller's store, and found this interesting: http://www.ebay.com/itm/16-Pieces-O...56?pt=Coins_US_Individual&hash=item51b6df5b2c Seller's description: Offered today are These 16, 1921 Morgan Silver Dollars Silver Dollars Of which 14 are Brilliant Uncirculated and two are just uncirculated Well looking at the photos, there are at least 5, maybe 6, that have more than enough noticeable wear on them and are not UNC.
It's a coin with good detail and luster, but it looks like it has been cleaned. I wouldn't say it's worth melt, though. It's just not a mint state coin.