Here’s a unique coin to mark the nation’s 250th birthday. It ain’t cheap: The cost is $250 apiece. However, what makes this memento so unusual is that it’s made out of copper from the original ...

The combination of "copper" and "penny" might not seem like the best formula for valuable coins considering that you can find higher denominations in gold and silver. But finding the right copper coin ...

Rhode Island's Alchemist Mint, the world's only mint that takes recycled materials through the entire process from melting to finishing, announced its first project today—a limited-edition coin struck ...

Copper isn't just a pretty metal. It plays a part in minting coins (although in ways you wouldn't expect), can substitute for iron in the blood of some creatures, and is responsible for the changing ...

The combination of "copper" and "penny" might not seem like the best formula for valuable coins, considering that you can find higher denominations in gold and silver. But finding the right copper ...