Check you $5 bills for serial numbers with all the same digits. They could be worth thousands. ... If you are in possession of an old five dollar bill, check it before you spend it.

Need to Know. Early 5-dollar bills are what is known as "large notes." They measured about 7.42 by 3.1 inches, and people even gave them the nickname "horse blankets" because of their size.

If you use a $10 to pay for a $2 item, put the $5 bill in your wallet and save the three $1 bills in the savings jar. It adds up quickly! Seriously, instead of a coin jar, add single dollar bills ...