The world’s most valuable coins usually have some combination of rarity, historical significance, unusual features and minting errors. When at least a couple of those boxes are checked, you can expect ...

Many of the valuable coins in the list below are not likely to be hiding in your attic since they are tremendously rare, but not all of them are super expensive either. Some more recent examples ...

Platinum bullion bars, ingots, and coins are rarer to find than gold and silver ... or price per troy ounce. Bullion dealers may list smaller quantities of platinum in price per gram, too. Here’s a ...

Copper has been a valuable commodity for thousands of years, and its uses have only increased as more industries appear. It is easy to obtain and trade. No. Although copper has often been used in ...

The gold standard was actually preceded by the silver standard, back when silver coins were still an everyday currency ... However, many gold bullion d ealers list gold in several international ...