How much is a bill with all the same numbers worth?

A circulated $1 solid often sells in the low-to-mid hundreds of dollars, with uncirculated notes, lucky digits, higher denominations, and star notes worth more. Seven-of-a-kind notes typically bring tens of dollars.

What is a seven-of-a-kind serial number?

A seven-of-a-kind serial has seven identical digits and one different digit, such as 44444449. It's the tier just below a true solid and carries a modest premium.

Guides · Fancy serials

Solid Serial Numbers (e.g. 88888888): What Are They Worth?

Q: What is a solid serial number?

A solid serial number has all eight digits the same, such as 88888888 or 33333333. They are among the rarest fancy serials because only a handful exist in each serial block.

A Follow the Money guide · Updated June 2026

A solid serial number is the trophy of fancy serials: all eight digits are the same — 8 8 8 8 8 8 8 8. There are only 90 possible solids per serial block (one for each digit, nine digits, across letter combinations), which makes them genuinely scarce and highly prized. Close cousins — “seven of a kind” — are nearly as exciting.

What makes a serial solid

Every one of the eight digits must be identical: 3 3 3 3 3 3 3 3. That's it. Because so few exist, a true solid is a headline find. A seven-of-a-kind has seven matching digits and one odd one out (like 4 4 4 4 4 4 4 9 or 5 5 5 5 5 5 6 5) and is the next tier down.

Why solids are so rare

For any given serial range there's exactly one note ending in each solid pattern, so they're vastly outnumbered by ordinary serials. That scarcity is why solids consistently top collector want-lists, and why even circulated examples hold a strong premium. A solid that's also a star note is a marquee item.

What is a solid serial number worth?

Solids are the high end of common fancy serials. A circulated $1 solid often sells in the low-to-mid hundreds, and uncirculated notes, higher denominations, lucky digits (like 7s or 8s), and star notes can go well beyond. Seven-of-a-kind notes bring a smaller but still meaningful premium, often tens of dollars.

How to check your bill

If you think you've spotted one, confirm it in seconds with the free Bill Value Checker — it identifies solids, seven-of-a-kinds, and every other pattern, with a value estimate. The app catches them automatically as you log bills.

Check your serial number Get the app

This guide is for general education and isn't an appraisal — values vary with the market and a note's exact condition. For a second opinion, post a clear photo to r/papermoney or consult a professional grader.

More guides: Low serials · Radar notes · Binary serials · Fancy serials