How much is a mismatched serial number worth?
Short answerA mismatched serial number on U.S. currency is an error note where the two serial numbers differ. Values range from $50 to several hundred dollars, depending on condition, denomination, and how dramatic the mismatch is.
What causes a mismatched serial number
Mismatched serial numbers occur when the two serial number printing stations (or overprint wheels) are not synchronized. One number is printed correctly, but the other is off by one or more digits.
This is a true printing error and is relatively rare. The most common form shows the same digits in different positions, such as 12345678 and 12345687.
- Two different serial numbers on one note
- Caused by mechanical misalignment
- More dramatic mismatches are worth more
- Often found on $1 and $2 bills
Value factors and ranges
A circulated mismatched serial $1 note might sell for $50 to $150. Uncirculated examples can bring $200 to $500 or more. Higher denominations multiply the value.
The greater the difference between the two numbers, the more desirable. A mismatch where one digit is off by one is common; a completely different number is rare and can push value into the thousands.
- Circulated $1: $50–$150
- Uncirculated $1: $200–$500
- Higher denominations: $500–$2,000+
- Large mismatches: premium
Common mistakes
- Confusing a mismatched serial with a fancy serial number—they are different errors.
- Assuming any mismatch is worth thousands; most are in the low hundreds.
- Overlooking condition; even a small fold can cut value by half.
