Repeater Notes

A repeater note is a currency note where the first four digits of the serial number repeat as the last four digits. For example: 14921492 or 83458345.

Serial Number · Repeater Example

A14921492B

First 4 digits (1492) repeat exactly as the last 4 digits

A repeater serial on a $1 Federal Reserve Note. The block "1492" appears twice consecutively, making the note instantly identifiable as a repeater.

Standard Repeaters

The most common type of repeater follows this pattern: the digits at positions 1-4 match digits at positions 5-8. This creates a 4+4 mirror effect.

14921492 ✓ (1492 repeated)
27772777 ✓ (2777 repeated)
00010001 ✓ (0001 repeated)

Repeater Note — How to Read It

4 9 2
      
4 9 2

← First half (pos 1–4) Second half (pos 5–8) →

Both halves are identical ✓ — This is the defining rule of a repeater

Serial 14921492 is a verified repeater. The first four digits "1492" (highlighted gold) repeat exactly as the last four digits "1492" (highlighted yellow). Learn more: PMG: Fancy Serial Numbers

Super Repeaters

A super repeater is even rarer. It consists of a 2-digit pair repeated four times, creating the pattern ABABAB:

15151515 (15 repeated four times)
99009900 (99 and 00 alternating)
74747474 (74 repeated four times)

Frequency and Rarity

A standard repeater (4+4 pattern) occurs roughly once every 10,000 serial numbers, similar to radars. However, super repeaters are much rarer, occurring approximately once every 1,000,000 serial numbers. This means a super repeater is roughly 100 times scarcer than a standard repeater.

Collector Recognition

Repeaters are immediately recognizable—you can spot them at a glance by checking if the left half matches the right half. This simplicity makes them popular with beginning fancy serial collectors. PMG and PCGS both recognize and label repeater notes in their encapsulation services.

Value Assessment

A circulated standard repeater typically carries a $5-$20 premium. Uncirculated repeaters of lower denominations range from $30-$100. Super repeaters command significantly higher values—easily $50-$300 even in circulated condition, and $500+ when uncirculated. Certified super repeaters can achieve prices in the hundreds or thousands.

Distinguishing from Other Patterns

Don't confuse repeaters with solids (all eight digits the same) or radars (palindromes). A repeater specifically has two distinct halves that are identical to each other, not individual repetitions of a single digit.