Not fancy but some consider it s binary note as it has 2 digits in the serial number. A true binary note consists of ones and zeros.
Maybe as close as on can get to a bill with only one repeating number. Meow wonders how much a $1 bill with serial number 77777777 would be worth or sold for.
Such a note would be worth hundreds of dollars. I saw one sold for $600, and one [currently selling] that someone wants over $1000 for. https://www.ebay.com/itm/Rare-1-in-...844851?hash=item5d8ab177b3:g:OxIAAOSwWlxcfNrY
I know, surprising. But, anyone can ask for any sum on ebay. There was a note that actually sold with solid sevens for $600. Even Inspector Gadget would be surprised at such a princely sum.