RareBillHigh serial number
A number at the very top of its run, beginning 9999: 99998412. These are the last notes printed in a block, and far fewer survive than you would expect.
How rare is it? Exactly 10,000 of the 100,000,000 possible eight-digit serial numbers are high serials — about 1 in 10,000. That figure is counted, not estimated: every possible serial was run through the same engine the RareBill app uses.
How to spot one
Look for four or more nines at the front.
Example: 99998412 —
check this one in the lookup.
What it is worth
A genuine premium, though below the equivalent low serial — collectors chase the start of a run harder than the end of it.
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, high serials rank #12 by scarcity.
Only low serials, radars, repeaters 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.