A binary note is a banknote whose serial number contains only two different digits. The term references the binary number system — base 2, using only 0s and 1s. While any two-digit combination qualifies, true binary (0s and 1s only) notes are the most desirable.
Examples: 10101010 (true binary), 88800888 (0s and 8s), 12112121 (1s and 2s). All are binary notes.
True Binary vs General Binary
True binary notes (0s and 1s only) are the most sought after, mimicking actual binary computer code. General binary notes use any two digits. Visually striking combinations — particularly 0s and 8s — still attract solid collector interest.
Binary Note Values
| Type | Value Range |
|---|---|
| $1 true binary (0s and 1s) | $20 - $80 |
| $1 general binary | $10 - $40 |
| $20-$100 true binary | $40 - $150 |
Check your serial for binary patterns — our free tool detects binary notes and eight other patterns simultaneously.
Binary NoteFancy SerialTwo DigitBanknote Collecting
Frequently Asked Questions
What is a binary note?
A binary note has a serial number containing only two different digits throughout. For example 10101010 or 11100011 — only 0 and 1 appear.
How much is a binary note worth?
Binary notes typically sell for $10 to $60 above face value. True binary (0s and 1s only) notes command the highest premiums.
What makes a binary note more valuable?
True binary notes using 0s and 1s are most collectible. Notes where the combination creates a visually interesting pattern also attract higher prices.
Can a binary note also be a radar?
Yes — a binary palindrome like 10011001 is both binary and radar, which increases its value.