RareBillBookend serial number
The serial starts and ends with the same two or three digits: 45123845. A subtle pattern that many people miss entirely.
How rare is it? Exactly 1,098,990 of the 100,000,000 possible eight-digit serial numbers are bookends — about 1 in 91. That figure is counted, not estimated: every possible serial was run through the same engine the RareBill app uses.
How to spot one
Compare the first two or three digits with the last two or three.
Example: 45123845 —
check this one in the lookup.
What it is worth
The mildest of the fancy patterns, and the most common. Worth checking for, rarely worth listing on its own.
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, bookends rank #16 by scarcity.
Only binaries, birthday notes, trinaries 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.