The 1959-D Repunched Mint Mark (RPM) represents the most common error variety. This occurred when workers manually punched the "D" mint mark multiple times in ...

As with just about any asset, a coin’s value is determined by its market demand. This means that coins in short supply often see higher demand — and higher values. With coins, supplies are limited ...

Coins that have mistakes or unusual features can sometimes turn into highly valuable treasures. Over the years, I've come across stories of collectors who discovered ...