Your 1879 Morgan is a San Francisco Mint product. Not sure, though it looks like it has the reverse of 1878. It appears uncirculated. Your 1926-S Peace dollar also is a San Francisco Mint product, circulated and cleaned. Nice pocket piece though. Never hurts having a few rolls around as a cash stash. Your Zombucks are nice collectibles and quite some artwork, but they do command a premium for an ounce of silver. Your center morgan is a replica, but one-ounce round. Sorry to say , but i think your 1921 is not a genuine product and probably not silver. In either case your interest in numismatics and the like is a very interesting and education and potentially profitable hobby. In any case Thedamus, you can get a really nice problem free AU -58 1921 Peace dollar for about 125. or you could get a couple of really nice MS-63 common date Morgans for 60.00 each, and these would be graded coins. Success in your pursuit of art, economics, metalurgy, finance and history. More info can be found at the ANA website, money.org and at your local clubs and coin shows. Happy hunting.