Coin # 1
http://cgi.ebay.com/1879S-Morgan-Si...cmdZViewItemObverse- The first noticeable thing that I see is that the hair and the rim is almost completely worn down. That considered, the lettering is still readable and the word "Liberty" is still well defined. The last thing noticeable is that the non-raised areas are mostly scratch free.
Reverse- The most prominent thing that I notice is that the eagle's wings are both severely worn especially near the top. The chest is also very worn. The rim is in better shape than the obverse but is still very well worn. Wreath is worn and the word united is almost un-readable.
Coin # 2
http://cgi.ebay.com/1899-S-MORGAN-S...cmdZViewItemObverse- The most noticeable thing is that the coin appears to be artificially toned (don't know official term). Hair is more detailed than first coin but still lacks a lot of detail. Rim is in nice shape. All lettering is well defined including "Liberty". There are many scratches.
Reverse- The wings definitely have less wear than first but wear is still visible. There are two or three dings (dents) in the rim. Eagle chest is worn. This side also appears to be artificially toned. Tail feathers last most if not all detail. Wreath is worn. Lettering is pretty well defined.
Coin # 3
http://rover.ebay.com/rover/1/711-5...AR_W0QQitemZ a href=
https://www.coincommunity.com/go/link.asp?target=https://www.ebay.com/itm/-/160265701830 target= _blank rel= nofollow 160265701830 /a QQihZ006QQcategoryZ39465QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Obverse- Oh wow. Umm. this is very hard to tell. It appears to be in good shape, at a glance. With the small images, it's next to impossible to see specific details. When blown up in photoshop the picture is so pixelated detail can't be seen. When you squint the coin looks to be roughly the same quality as coin # 1.
Reverse- Again, this coin is very hard to see. When I look at the left side, the whole thing looks to be a blur. It appears to me like the lower left wing is almost completely worn off. But again, I cannot be 100% certain.
If I had to chose. I wouldn't chose the third seller. Even with a 97.4% feedback, I don't usually buy from sellers with negative feedback. I wouldn't buy the coin either because of bad picture quality.
Between the first and the second sellers, I think that I would pick the second. Even though the coin is artificially toned (I think), It has much better detail quality than the first coin. The seller has good feedback as well with no negatives and no neutrals.