Valuable coins may be hiding in your change

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(KTVI)- Valuable coins may be hiding in your change. But when is a coin worth more than it's face value?

There are a number of different reasons why they can be valuable and Clay Teague from Scotsman Coin & Jewelry, stopped by the FOX 2 studios.

Clay tells us what we should look for. He also left a helpful list for us to get started.

1. 2004 Wisconsin state quarter with extra leaf
Value: Up to $300
Find an average Wisconsin state quarter from 2004, and that will get you one-fourth of a bag of chips. Find one with either the high or low leaf error, and you can get a whole lot more.

The 50 State Quarters series ran from 1999 until 2008, with special designs representing each state. Wisconsin's quarter came out in 2004; the reverse design features a cow, a wheel of cheese and a partially husked ear of corn lurking in the back.

2. 1995 double die penny
Value: $20 - $50

Image: Lincoln Centre Resource

Image: Lincoln Centre Resource
This penny has a double-printed obverse (heads side) that makes the "LIBERTY" and "IN GOD WE TRUST" look blurry. The error has happened before, in 1969 and 1972, and those versions of the coins are much more valuable.

3. 1942-1945 silver nickel
Value: 56 cents - $12.25
During World War II, the United States needed to save as much nickel as possible for military uses. Consequently, it started minting nickels made of 35% silver. Melting down pennies and nickels is a federal offense, but the coin might still fetch you enough for a decent lunch, if it's in good condition.

4. 1943 steel penny
Value: 45 cents - $10
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Pennies were made from steel in 1943 only.
Image: United States Mint
Pennies were made from steel during wartime, for the same reasons nickels were made partially from silver — steel pennies helped preserve copper for World War II. However, the switch only lasted one year.

5. Ben Franklin half-dollar
Value: $12 - $125
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Easy to notice, but hard to find.
Image: United States Mint
In 1948, the U.S. mint began circulating half-dollar coins with images of Ben Franklin and an eagle — which is funny, considering Franklin opposed the bald eagle's nomination as the nation's bird, in favor of a wild turkey.

Franklin's portrait on the coin was replaced by John F. Kennedy in 1964, following the president's 1963 assassination.

6. 1932-1964 silver quarter
Value: $7 - $65
Between 1932 and 1964, quarters were 90% silver and 10% copper. These silver quarters look like any pre-state quarter 25-cent piece, but are worth a lot more if they're in the right condition.

7. 'In God We Rust' 2005 Kansas state quarter
Value: Up to $100

Remember: Always clean your machine.
Image: About.com
While it might seem like a mint employee's rogue political statement, these coins are actually just the result of grease preventing a clean pressing.

8. Presidential dollar coin with lettering errors
Value: $20 - $45
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These Washington dollars are missing key inscriptions.
Image: NGC
In 2007, the U.S. Mint began printing a series of dollar coins featuring presidents. Many of the early coins, especially those with George Washington, have errant or missing lettering along the edge of the coin.