Collector guides
US Currency Collecting Guides
Follow the Money · Plain-English guides to the paper money in your wallet
Most US bills are worth exactly their face value — but a small slice are worth more to collectors, and a lot of myths swirl around which is which. These guides explain the real signals in plain English, with honest, caveated values. Start with the pillar, What Makes a Dollar Bill Valuable?, then dig into the specifics below. Got a bill in hand right now? Run its serial through the free Bill Value Checker.
Fancy Serial Numbers Explained
Solids, ladders, radars, repeaters, binaries, low serials, and birthday dates — every pattern, with examples and rough rarity.
Read guide → Star notesStar Notes Explained
What the ★ means, why stars are scarcer, and why value depends on print-run size — not every star is a jackpot.
Read guide → VintageSilver Certificates
The blue-seal notes: a short history, how to spot them, and why common ones are modest while rare dates climb.
Read guide → ErrorsError Notes
Miscuts, mismatched serials, ink smears, and gutter folds — what they are and how dramatic they need to be.
Read guide → Myth-bustingAre $2 Bills Worth Anything?
The honest answer: most modern $2 bills are common and worth face. Here's exactly when one is worth more.
Read guide → How-toHow to Tell If a Bill Is Valuable
A 5-step check — serial, star, year, seal, condition — to know in under a minute if a bill beats face value.
Read guide → How-toSerial Number Lookup
What your serial number actually means, whether you can trace a bill, and how to tell if it's worth more than face.
Read guide → Serial numbersRadar Notes
Serials that read the same backwards and forwards (1234321) — plus the rarer super radar, and what they're worth.
Read guide → Serial numbersRepeater Notes
A serial that repeats a block (12341234), plus super repeaters — how rare they are and roughly what they sell for.
Read guide → Serial numbersBinary Serial Numbers
Serials built from only two digits (01010101), the true-binary 0/1 style, and the trinary cousin.
Read guide → Serial numbersSolid Serial Numbers
All eight digits the same (88888888) — the trophy fancy serial — plus seven-of-a-kind, and what they bring.
Read guide → Serial numbersLow Serial Numbers
Bills like 00000045 — the lower the number, the more it's worth. Why 00000001 is the prize.
Read guide → Serial numbersLadder Notes
Digits in sequence (12345678 or 87654321) — perfect vs. near ladders, and why perfect ladders are prized.
Read guide → Serial numbersBirthday Notes
A serial that spells a date (07041976). Personal, giftable, and worth more to the right buyer.
Read guide → Start hereWhat Makes a Dollar Bill Valuable?
The big-picture guide that ties it all together: serials, stars, errors, age, and condition.
Read the pillar guide →Check a bill in seconds
Type in a serial number and see instantly whether it's fancy, a star, or vintage — free, no sign-in.
Open the Bill Value Checker