Here's how to make money on your money.
Check your dollar bills to see if there's anything strange about the serial numbers.
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The blog The Penny Hoarder says look for these quirky serial numbers.
- 7 repeating digits like zero and then seven 9s.
- 7 of a kind.
- Check your bills for what are known as super repeaters, like 67676767.
- Double quads like four zeros and then four 9s.
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Some of these rare or quirky serial numbers can make your dollar bills worth $500 or more to collectors.
Now, if you want to take this to the next level, check $100 bills, too.
An auction dealer from Dallas says the very first bill from the redesigned 2013 bill could be worth $15,000. That bill has a serial number with seven zeros followed by a one.