Guides · Errors

Error Notes: Miscuts, Mismatched Serials & Ink Errors

A Follow the Money guide · Updated June 2026

Of all the ways a bill can be collectible, printing errors are the most exciting — and the only ones you can't detect from the serial number alone. An error note is a bill that slipped past the Bureau of Engraving and Printing's quality control with a genuine production mistake. The more dramatic and obvious the error, the more collectors tend to pay. This guide covers the main types, how to tell a real error from ordinary damage, and what drives value.

The main types of error

Miscuts and misalignments. The sheet was cut off-register, so the design is shifted — you might see part of the next bill, an oversized margin, or the design running off one edge. Big, obvious miscuts are among the most popular errors.
Mismatched serial numbers. The two serial numbers on the note don't match. Because serials are supposed to be identical, even a single wrong digit is a true error.
Ink smears and overinking. Streaks, blotches, or a heavy smear from the press. Bold, clearly-from-the-press ink errors carry value; faint marks usually don't.
Gutter folds. A blank crease where the paper folded during printing, leaving an unprinted white streak across the design.
Inverted or missing overprints. The green Treasury seal and serial numbers printed upside down, badly off-position, or left off entirely. These are dramatic and sought-after.
Insufficient inking and foldovers. Areas of missing design, or a corner of paper folded over before printing so ink landed in the wrong place.

Error versus ordinary damage

This is the trap most people fall into. A bill that got chewed by a washing machine, torn, written on, or stained after it left the press is just a damaged bill — not an error note, and not worth a premium. A true error happened during production. The tell is whether the anomaly is part of the printing itself: a gutter fold leaves a clean unprinted line; a miscut shows the design genuinely shifted on the paper; mismatched serials are baked into the ink. Post-printing wear and tear, by contrast, sits on top of a normally-printed note.

What an error note is worth

Value tracks two things above all: how dramatic the error is and condition. A subtle, hard-to-see error might bring only a small premium, while a bold, eye-catching one — a major miscut, a striking gutter fold, an inverted overprint — can be worth hundreds of dollars or more, and the rarest dramatic errors go higher. Crisp, uncirculated examples command the strongest prices. Because errors are so varied, there's no single price chart; comparable recent sales are the best guide.

If you think you have one

Handle it gently and don't try to "fix" or flatten it. Photograph the front and back in good light, then get a second opinion before spending or selling it. Dramatic errors are also frequently faked or misidentified, so confirmation matters — serious error notes are often authenticated by a professional grading service like PMG or PCGS.

Where errors fit in

Errors are one of four big value signals, alongside fancy serials, star notes, and age. For the whole framework, read the pillar guide, What Makes a Dollar Bill Valuable? And while the Bill Value Checker reads serial patterns and vintage years, errors are visual — so give every bill a quick eyeball for the mistakes above, especially if the serial check comes back ordinary.

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This guide is for general education and isn't an appraisal — values vary with the market and a note's exact condition. For help confirming an error, post clear front-and-back photos to r/papermoney or consult a professional grader.

More guides: Fancy serial numbers · Star notes · Silver certificates · Are $2 bills worth anything?