Many collectors spend hours searching for unusual notes that bear "fancy" serial numbers. Especially desired are binary notes, those with just two random repeating digits. Fancies like these have a reputation of being tough to find in circulation. But now, you can own sought-after binary notes easily and affordably. Each $1 Federal Reserve Note is in beautiful Choice Crisp Uncirculated condition, just like the day it was printed, and is guaranteed to carry a prized binary serial number.