Errors increase the value of collectibles because a limited number go into circulation before it is spotted and corrected.

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 ...

Manufacturing errors might be annoying when it comes to most products, but they can be a massive moneymaker when it comes to collectible money. Errors increase the ...