Fancy Serial Number Checker
Type the serial number from any U.S. bill. The checker looks for the patterns collectors pay extra for and tells you what notes like yours typically sell for.
Check a serial number
Type the 8 digits of the serial number. Add the letters and the star if your note has them; the checker reads the digits.
Patterns and what they bring
Typical prices for single common $1 and $2 notes, from recent sold listings.
| Pattern | What it means | Example | Typical value |
|---|---|---|---|
| Solid | All 8 digits the same | 33333333 | Rare; hundreds of dollars or more |
| Near solid | Seven of 8 digits the same | 33333833 | $7–43 |
| Radar | Reads the same forward and backward | 12344321 | $8–20 |
| Repeater | The first 4 digits repeat | 45674567 | $5–20 |
| Ladder | Digits count up or down in order | 12345678 | $5–9 for partial ladders; a true 12345678 is worth far more |
| True binary | Only 0s and 1s | 10011010 | $10–55 |
| Two-digit | Only two different digits | 47744777 | A small premium |
| Low serial | Starts with five zeros | 00000412 | $13–120 |
| Star note | A star in the serial | B 12345678 ★ | See the star note guide |
What most patterns are really worth
Many online lists quote big prices for fancy serial numbers. Real sales are lower for most patterns. A radar or repeater on a common modern note usually sells for $5 to $20. The big money is in true solids (like 77777777), perfect ladders (12345678) and serial numbers under 100.
Questions
What is a fancy serial number?
A serial number with a pattern collectors look for, such as a radar, repeater, solid, ladder, binary or very low number.
How much is a radar serial number worth?
On a common modern $1 or $2 bill, recent sales of single radar notes centered around $12, with most between $8 and $20.
Does the checker work on any bill?
Yes. It reads the 8 digits of any U.S. note. The value of the pattern also depends on the note itself and its condition.
See also: star note values, $2 bill values, silver certificate values.
Values checked October 9, 2026 against recent sold listings. They are typical prices, not offers. Worn modern notes are valued at face, since that is what a bank or store gives you. How values work.