Here's a nice example of what "bag toning" looks like! Obverse is a bright MS60, reverse grades higher with beautiful original toning. This coin must have sat in a bag for years with the reverse touching the canvas fabric.
Were these coins commonly found in bags? That's not the look I associate with bag toning (I'm more familiar with bag-toned Morgans), but these are quite a bit younger than Morgan dollars. Do you know the history of this coin, and know that it came from a bag? To me, that looks more like album toning, or possibly toning from some aftermarket holder. Either way, it is attractive.