The value of a rare coin is dependent on its condition, mintage and whether a lot of replicas are still in circulation ...

Knowing what to look for when it comes to the most valuable coins in circulation can help you keep an eye out for some of these superstars. Besides looking for specific coins, there are a few ...

The president's halt on "wasteful" penny production could cause the value of the rarest one-cent coins to surge.

The spare change in your coin jar, for instance, could hold a rare collectible ranging from a normal-looking 2004 Wisconsin ... that are still in circulation. With only five in existence, you ...

Coins with a currency value of 25 cents have been around about as long as the country itself, with the first 25-cent pieces ...

The Royal Mint has revealed some of the rarest coins to enter circulation during the reign of Queen Elizabeth II. Rare coins ...

If a coin has a low mintage, it means there's less in circulation and is therefore rarer ... is the second coin the expert told people to look out for. The S distinction can be found under the ...

This particular coin, often referred to as the "holy grail" by enthusiasts, was struck in 2008 with fewer than 250,000 entering circulation, making it a potential find in everyday cash transactions.

It might be tough to find these coins, but they can help you get from Sydney to London and back if you stumble across them.