These investment-grade silver bullion coins are guaranteed for weight content and purity — 1 ounce of 99.9 percent ... Despite bearing no face value, Libertads are legal tender guaranteed ...

Up until the 20th century, many coins were composed of basic metals like gold and silver ... more rare coins that sold for over $1 million, with prices and details sourced from SD Bullion.

Simply put, coins made from precious metals like gold, silver and platinum are often more valuable due to the intrinsic value of the metal itself. For instance, the American Eagle gold bullion ...