What happens if a $100 dollar bill has a star?

I'm curious, what exactly happens if a $100 dollar bill has a star on it? Does it mean it's a special edition or hold some sort of unique value? I've seen some currency with special markings before, but I'm not familiar with the star symbol. Could it potentially impact the bill's authenticity or worth? I'd love to hear more about the significance of this feature, if any.