Among a collection of coins left to me 16 years ago by my grandfather are these two medals (?). Sorry for the quality; my first uploads. One is Eisenhower with his birth and death dates. The other is JFK and RFK with birth and death dates for each. The reverse eagle is the same for both, except the Eisenhower is better defined, more like a proof. I don't know weights. Diameter is 34mm. Thickness is about 1mm. Edge is grooved, if that's the right word. I found this link to an ebay sale for the Ike, but nothing on the Kennedy brothers medal. http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWAX:IT Indeed, the Ike is signed by Bodlak, but I find no signature on the Kennedys. They feel a little light to be silver. Help me out. What are they? What are they made of? What are they worth?