Have you ever wondered if the cash in your wallet is worth more than its face value? Believe it or not, some $1 bills could be worth a fortune!
A website called CoolSerialNumbers.com specializes in unique and valuable bills with special serial numbers. If you have one, you might be sitting on a small treasure!
Look for $1 Federal Reserve notes with seven repeating digits in a row—for example, 09999999 or 18888888. These are rare and highly collectible. Another valuable type is bills with seven of the same digit, such as 00010000 or 90999999.