Fancy Serial Number Checker
Collectors pay real money for "fancy" serial numbers. Type the serial from any US bill and see every pattern it hits - instantly, and computed right here so it's exact.
Type the 8-digit serial from the front of the note. Include a or *if it's a star note. Nothing is sent anywhere - this runs in your browser.
Fancy serial patterns collectors look for
| Pattern | Example | What it is |
|---|---|---|
| Solid | 44444444 | Every digit the same. Among the most valuable patterns. |
| Ladder | 12345678 | Eight digits in order, up or down. Very scarce. |
| Radar | 12333321 | A palindrome - reads the same both ways. |
| Super radar | 18888881 | A radar with identical inner digits. Rarer still. |
| Repeater | 31703170 | The first four digits repeat as the last four. |
| Binary | 10110100 | Only two different digits in the whole serial. |
| Low serial | 00000017 | Under 100 (or under 1,000) - low numbers command a premium. |
| Trailing zeros | 29000000 | Ends in several zeros - a clean 'flipper'. |
FAQ
Does the serial alone make a bill valuable?
A genuinely fancy serial - solid, ladder, radar, very low - can sell for well above face. Ordinary serials are worth face value unless the note is a star note, scarce series, or in high grade.
Where do I find the serial number?
It's printed twice on the front of US currency, in the upper-right and lower-left, as a prefix letter, eight digits, and a suffix letter (or a star). The eight digits are what this tool reads.
Is my serial sent anywhere?
No. The pattern check runs entirely in your browser - nothing is uploaded or stored.