RareBillRepeater serial number
The last four digits repeat the first four: 19731973. Dates make especially collectable repeaters, since someone will want their year twice over.
How rare is it? Exactly 9,900 of the 100,000,000 possible eight-digit serial numbers are repeaters — about 1 in 10,101. That figure is counted, not estimated: every possible serial was run through the same engine the RareBill app uses.
How to spot one
Split the serial in half and compare the two halves digit for digit.
Example: 19731973 —
check this one in the lookup.
What it is worth
A solid, liquid find. Repeaters that also read as a meaningful year tend to fetch more than the pattern alone would suggest.
Condition matters as much as the pattern. A crisp uncirculated note can be worth many times the same serial in worn condition, which is why RareBill shows value ranges with links to current listings rather than a single number.
Where it sits
Among the sixteen patterns RareBill checks, repeaters rank #11 by scarcity.
Only seven-of-a-kinds, low serials, radars are rarer among the patterns RareBill checks.
Check a serial now
Type any serial into the free lookup and it will tell you every pattern it matches, instantly, in your browser.