Fancy Serial Number Checker
Paste your bill’s 8-digit serial number and see instantly whether it matches a collectible pattern, how rare it is, and roughly what it may be worth.
Enter your bill’s 8-digit serial number above to see its rarity score, any matched patterns and an estimated value range. Nothing is uploaded. The check runs entirely in your browser.
Where to find the serial number on your bill
Every US Federal Reserve Note carries the same serial number printed twice on the face: once in the upper-right corner and once in the lower-left. It is set in green ink, the same shade as the Treasury seal beside it. Read the characters in order and the structure is always the same.
One or two letters come first: the prefix, which identifies the series and the Federal Reserve district that issued the note. Then come exactly eight digits. Those eight digits are the part collectors care about, because the pattern they form is what makes a note ordinary or unusual. After the digits sits a single suffix letter, or a star. A star in place of that final letter marks a replacement note, printed to swap out a bill spoiled during production. Both printed copies always show the same characters, so it does not matter which of the two you read.
When you type a serial into the tool above, only the eight digits are scored for a pattern; the prefix, suffix and star are read for context. Where Is the Serial Number on a Dollar Bill?
Fancy serial number patterns
A pattern is simply an arrangement of those eight digits that stands out from a random sequence. Some are famous, like a radar that reads the same in both directions; others, like a low serial number, are prized because so few notes carry them. This fancy serial number lookup checks every pattern below at once. Each card shows a worked example, a plain definition, rough odds and a typical value range; four patterns have their own page, and the rest are explained on the hub.
- Solid
77777777Every one of the eight digits is identical.
- Rarity
- 1 in 11,111,111
- Seven of a Kind
77777771Exactly seven of the eight digits are identical.
- Rarity
- 1 in 158,730
- Super Radar
71111117A radar whose inner six digits are all identical.
- Rarity
- 1 in 1,000,000
- Radar
12344321Reads the same forwards and backwards (a palindrome).
- Rarity
- 1 in 10,000
- Super Repeater
12121212A two-digit block repeats four times (ABABABAB).
- Rarity
- 1 in 1,000,000
- Repeater
12341234The first four digits repeat as the last four (ABCDABCD).
- Rarity
- 1 in 10,000
- Double Quad
11112222Four of one digit followed by four of another (AAAABBBB).
- Rarity
- 1 in 1,000,000
- Ladder
12345678All eight digits ascend or descend in sequence.
- Rarity
- 1 in 5,000,000
- Broken Ladder
12345687Contains a run of six or more sequential digits without being a full ladder.
- Rarity
- 1 in 1,000
- Binary
10101100Built from exactly two different digits.
- Rarity
- 1 in 1,500
- Trinary
12312312Built from exactly three different digits.
- Rarity
- 1 in 400
- Low Serial (under 10)
00000007Serial value below 10 (00000001-00000009).
- Rarity
- 1 in ~11,000,000
- Low Serial (under 100)
00000042Serial value below 100.
- Rarity
- 1 in ~1,100,000
- Low Serial (under 1000)
00000500Serial value below 1000.
- Rarity
- 1 in ~111,000
- High Serial
99999999Serial value of 99999900 or above.
- Rarity
- 1 in ~111,000
- Birthday Note
01011990The digits form a valid MMDDYYYY calendar date.
- Rarity
- 1 in ~275
- Flipper
60000009Reads the same rotated 180 degrees; only digits 0, 1, 6, 8, 9 qualify.
- Rarity
- 1 in ~15,000
What is your bill actually worth
Value depends on far more than the pattern alone. Condition is decisive: a crisp, uncirculated note can be worth many times the same note after years in a wallet. Denomination, series year, the issuing district and simple collector demand all move the price too. The table below gives recorded sale ranges by pattern and condition, each with the number of sales behind it, so you can see how firm the evidence is. Treat every band as a starting point for research, not a guarantee. Combinations with no recorded sales are left blank rather than guessed, and small samples are flagged as indicative.
| Pattern | Circulated | Very Fine | Uncirculated |
|---|---|---|---|
| Solid | no recorded sales | no recorded sales | $6,325–$9,6002 sales · indicative |
| Ladder | no recorded sales | no recorded sales | $660–$3,6003 sales · indicative |
| Radar | no recorded sales | $40–$2884 sales · indicative | $228–$48029 sales |
| Binary | no recorded sales | $55–$1563 sales · indicative | $84–$37814 sales |
| Broken ladder | no recorded sales | no recorded sales | $89–$3123 sales · indicative |
| Low serial (under 1000) | no recorded sales | no recorded sales | $116–$2952 sales · indicative |
| Repeater | no recorded sales | $53–$531 sale · indicative | $135–$2238 sales |
| Birthday note | $20–$201 sale · indicative | $5–$51 sale · indicative | $14–$5410 sales |
| Low serial (under 100) | no recorded sales | no recorded sales | no recorded sales |
| Super radar | no recorded sales | no recorded sales | no recorded sales |
Last updated 2026-09-09.
Bands are the range of recorded sold prices. “Indicative” marks a small sample: what has been paid, not a reliable market range. Blank combinations have no recorded sales and are left empty rather than guessed.
Does your bill have a star?
If the serial number ends in a star instead of a letter, you are holding a star note. The Bureau of Engraving and Printing prints these as replacements when a sheet is damaged or misprinted during production, and it never reissues the exact serial that was spoiled. Because far fewer star notes enter circulation than standard notes, they carry a premium in their own right, and a star note that also happens to hold a fancy pattern is doubly interesting to collectors. Print runs vary enormously: some star runs number in the millions, others only a few hundred thousand, and the smallest runs command the strongest prices. Our checker flags a star automatically as soon as it reads one in your serial.
Check value by denomination
Some questions are really about the denomination rather than the pattern. The $2 bill is the classic example: most are worth face value, but specific series, seals and star notes are worth far more, and people often want to run its serial for a pattern at the same time. If that is you, start with one of these pages. The same idea applies to other denominations as we expand the site: face value sets a floor, and pattern, condition and star status decide how far above it a bill can climb.
- $2 Bill Value Guide
What a $2 bill is worth by series, seal color and condition.
- $2 Bill Serial Number Lookup
Look up the serial number on a $2 bill and check it for fancy patterns.
How we estimate value
Our ranges are built from realised prices, not asking prices. We track results from major auction houses including Heritage Auctions and Stack’s Bowers, watch completed eBay sold listings for the middle of the market, and cross-check scarcity against BEP production reports so a pattern’s odds reflect how many notes were actually printed. Condition is mapped to PMG and PCGS grading standards so a range means the same thing from one note to the next. Where the sample of recent sales is thin, we say so through the confidence label rather than inventing a precise figure. The figures on this page are currently placeholders while that sold-listing dataset is assembled; each will be attributed to its source as it lands. Nothing here is an offer to buy or a formal appraisal; it exists to help you research a note before you approach a dealer or an auction house.
Read the full methodology · Last updated: September 8, 2026
Common questions
What is a fancy serial number?
A fancy serial number is one whose eight digits form a recognisable pattern rather than a random string. Radars, repeaters, ladders, solids, binaries and very low numbers are all examples. Collectors pay attention to them because a memorable pattern is scarce and easy to appreciate at a glance. An ordinary note has no such structure, so it is worth face value. The tool at the top of this page reads your digits and tells you which pattern, if any, they match.
Which patterns are worth the most?
As a rule, the scarcer the pattern, the higher the ceiling. Solid serials, true ladders, super radars and single-digit low numbers sit at the top, while radars and repeaters are more common and more affordable. That said, condition and demand can outweigh rarity: a clean, uncirculated common pattern can beat a heavily worn rare one. Use the value table above to compare patterns side by side across the three condition bands.
Is this fancy serial number checker free?
Yes. This fancy serial number checker is completely free, with no account, no sign-up and no limit on how many notes you check. Everything runs in your browser, so your serial numbers are never sent to a server or stored. You can bookmark or share a result, since the serial is saved in the page address, and run as many notes as you like.
What do the digits mean versus the letters?
The letters and the digits do different jobs. The one or two prefix letters identify the series and the Federal Reserve district; the suffix letter, or star, simply continues the count within a print run. The eight digits in the middle are the serial proper, and they are the only part scored for a pattern. So when people talk about a collectible pattern, they mean those eight digits, not the surrounding letters.
My note scored highly: what should I do next?
First, handle it carefully: keep it flat and clean, ideally in a currency sleeve, because condition strongly affects value. Then confirm the pattern and look at recent sold listings for the same pattern and grade to gauge the real market. If it looks genuinely scarce, consider third-party grading from PMG or PCGS, which makes a note easier to sell and often lifts the price. Only then decide whether to hold, sell privately or consign it to auction. Photograph both sides in good light first, so you have a clear record of its condition before it changes hands.
Do star notes count as fancy?
A star note is not a pattern in itself, but it is collectible for a related reason: it is a replacement note, and fewer of them exist. A star adds to a note’s interest and can raise its value, especially from a small print run, and a star note that also carries a fancy pattern is more desirable than either feature alone. Our tool flags a star as soon as it reads one at the end of your serial.
How accurate are the value estimates?
Treat them as informed guidance, not an appraisal. Paper-money prices move with condition, demand and what happens to sell that month, so any honest figure is a range rather than a single number. We show a confidence label with every row and, where recent sales are scarce, we widen the range or mark it clearly instead of guessing. For a firm valuation, a professional grader or dealer is the right next step.
Where can I sell a note with a collectible serial?
The main routes are online marketplaces like eBay, specialist currency dealers, and auction houses such as Heritage Auctions or Stack’s Bowers for higher-value notes. Marketplaces reach the most buyers but take fees; dealers are quicker but pay wholesale; auctions suit genuinely scarce material. A currency serial number lookup and a graded holder both help buyers trust what you are selling, which usually improves the price you achieve.
All tools
- Fancy Serial Numbers on US Banknotes
What makes a dollar bill serial number fancy, the pattern types collectors chase and how to check yours.
- Radar Serial Number Checker
Check whether a banknote serial number is a radar, a number that reads the same forwards and backwards.
- Ladder Serial Number Checker
Check whether a banknote serial number is a ladder of consecutive ascending or descending digits.
- Low Serial Number Checker
Check whether a banknote has a collectible low serial number.
- Birthday Note Serial Number Checker
Check whether a banknote serial number matches a birthday in MMDDYY or similar date formats.
- Fancy Serial Number Value Guide
How collectors price fancy serial numbers and what drives the value of a note.
- $2 Bill Serial Number Lookup
Look up the serial number on a $2 bill and check it for fancy patterns.
- Where Is the Serial Number on a Dollar Bill?
Find the serial number on a US dollar bill and learn what each character means.
- Star Note Lookup
Look up US star notes and learn what the star in a serial number means for collectors.
- $2 Bill Value Guide
What a $2 bill is worth by series, seal color and condition.
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