Usually when errors happen during the production process, they lead to a decrease in value of the manufactured item. But when they happen at the U.S. Mint, they could lead to an item ballooning 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 ...

Priority Checks: All pennies from 1955-1995 1982 and 1983 cents especially State quarters (all years) Presidential dollars edges Any off-center coins Coins that look "different" This systematic ...

A reverse proof die meant for special coins was mistakenly used on regular circulation pennies. You can spot it by looking at the spacing between the letters “A” and “M” in “AMERICA” on the reverse ...

Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

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 ...