Looks like the 1881S is the best Morgan you have and worth more than the others. From what I can see the 1898 coins and the 1921 coins appear to be XF-AU grade. A dealer may consider them melt value but buyers on ebay would pay more than melt for them individually. Nothing here worth paying the premium to have them slabbed. Protect that 1881s in a quality holder, the rest are OK in cardboard 2x2 holders. You say that you have other series of coins too. Keep them all and perhaps spark an interest in your children with these pieces of history.
























