Dollar Bill Serial Number Checker
Collectors pay premiums for banknotes with unusual "fancy" serial numbers. Enter your bill's 8-digit serial number below to instantly see whether it matches any of the patterns collectors look for — solids, ladders, radars, repeaters, binaries, low serials and more.
This tool identifies which collectible "fancy serial" categories your note matches. It does not estimate a dollar value — that depends on condition, grade and demand. For a real valuation, scan your bill with the Rare Money app or consult a professional.
Frequently asked questions
What is a fancy serial number?
A fancy serial number is a banknote serial that forms an unusual or collectible pattern — such as all the same digit (solid), a sequence (ladder), a palindrome (radar), or a repeated block. Collectors pay premiums for them above face value.
What is a star note?
A star note has a star symbol (★) at the end of its serial number. The U.S. Bureau of Engraving and Printing prints star notes to replace misprinted bills, which makes them scarcer and often more collectible.
What is a radar or repeater serial number?
A radar reads the same forwards and backwards, like 12344321. A repeater repeats a block of digits, like 12341234. Both are popular fancy-serial categories.
Does this tool tell me my bill's exact value?
No. Value depends on condition, grade, denomination and live collector demand, which this tool cannot determine. It identifies which fancy-serial categories your note matches and how desirable they tend to be. For a real valuation, scan the note with the Rare Money app or get a professional appraisal.
Does it work on foreign currency?
The pattern checks (solid, ladder, radar, repeater, binary, low serial) apply to any numeric serial. The star-note feature is specific to U.S. currency.