Please identify coins, metal content, weight and market value (Presidential rounds)

Please identify these coins, their metal content, weight and current market value. Thanks. :thumb:

 

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.925 silver
Diameter 39 mm.
Weight 23.1 Gram 0.815 Ounce

I can't help you with collector's value but you can look up the silver value here:

http://www.dendritics.com/scales/metal-calc.asp

Part of a set:

http://cgi.ebay.com/40Presidential-...244?pt=LH_DefaultDomain_0&hash=item230fbaf1fc

 

Thank you, your help is much appreciated!