Minting coins isn't exactly an exact science. Even though most coins are perfect and uniform, small mistakes can result in error coins that are super valuable and ...

Sometimes planchets for one coin denomination are fed into a coin-stamping press equipped with dies of another denomination. This results in a coin that has been stamped with a design intended for a ...

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 ...

Like the leaning tower of Pisa, error coins demonstrate the alluring appeal of human error. Error coins account for some of the most rare and valuable collectable ...

Some rare Euros go for thousands - read on for the four most valuable around BRITS are being urged to check their holiday cash for some ultra-rare Euro coins in circulation that could be worth ...