A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

The American Innovation dollar series for 2025 continues with the planned release of bags and rolls of the coin commending ...

The retail price for the Proof 2025-W American Buffalo 1-ounce .9999 fine gold $50 coin will likely exceed $3,100, ...

A single coin can be worth a lot of money -- a pretty penny, one might say -- if it's rare and has enough historical ...

The Lincoln Wheat Penny was created by the United States Mint in 1909 to honor the country's brave Civil War leader. It was ...