US Notes

cutting errors

Butterfly Cut Errors on Modern Federal Reserve Notes: When the Final Cut Bisects Two Notes and Creates a Joined Pair

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Butterfly cut errors rank among the most visually dramatic production mistakes in modern Federal Reserve Note manufacturing, occurring when the guillotine trim fails to fully separate two finished notes. This guide breaks down exactly how these errors form, which series and denominations carry the most collector weight, and what you should expect to pay for a genuine specimen in today’s market.

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Cutting Errors: Offset Cuts, Insufficient Margins, and the Rarest Butterfly Errors on U.S. Currency

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Cutting errors rank among the most visually dramatic mistakes in U.S. currency production, from minor margin shifts to the jaw-dropping butterfly fold that creates a note with two faces. This guide breaks down every major cutting error type, explains how they happen on the BEP’s rotary cutting equipment, and gives collectors the specific knowledge needed to identify, grade, and value these spectacular pieces.

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Flip-Over Cutting Errors: The Fascinating Mirror-Image Back Pairs That Baffle and Delight Currency Collectors

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Flip-over cutting errors occur when a printed sheet is accidentally inverted before the guillotine blade falls, producing a pair of notes whose backs mirror each other in orientation. Understanding how these errors happen, how to authenticate them, and which examples command the highest premiums can give collectors a decisive edge in the marketplace.

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Cutting Errors That Create Double Denomination Pairs: When Two Different Notes Share a Sheet

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Double denomination cutting errors rank among the most spectacular and rarest misprints in all of United States paper money, occurring when a single sheet inadvertently combines notes of two different face values before cutting. Understanding how these freaks of the printing press happened, which examples are documented, and what they command at auction is essential knowledge for any serious error note collector.

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