But they aren't the most expensive coins. American mints have been issuing silver dollars, coins with a $1 dollar face value that are made of 90 percent silver, since 1794.

Dimes make dollars, they say — but some dimes are worth more than a few dollars. As Gainesville Coins detailed, there are U.S. dimes that have sold for more than seven figures in the past. Find Out: ...

Coin collectors are captivated by rare and valuable coins which carry historical ... the 2007 Canadian Gold Maple Leaf, and Morgan Silver Dollars, all fetching significant sums.