The 1954 Franklin half-dollar is made of 90% silver and 10% copper. It has 0.36169 troy oz content ... Etc.). Unfortunately, coin collectors and dealers had different ideas about what each of these ...

Coming in at No. 2 on the Coin Trackers list, the 1943 Copper Penny could net you up to $250,000, depending on its condition. This penny is another happy accident, since the pennies minted that year ...