You probably don't think twice about the crumpled dollar bills sitting in your wallet. They're just money, right? Here's the thing though. Some of those bills might actually be sitting on value you'd ...
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The "binary" bill: If your cash has only two digits in the serial number, it's a collector's item
Most of us barely glance at the money we use each day. We look at the amount printed on the front and ignore everything else. Yet one small detail tucked away on every bill could mean the difference ...
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