US Notes

anti-counterfeiting

The Obverse Border Design of the 1890 Treasury Notes: Interlocking Patterns That Defeated Every Counterfeiter of the Era

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The 1890 Treasury Notes stand as arguably the most ornate currency the United States government ever produced, with obverse border designs so geometrically complex that no counterfeiter successfully replicated them during their circulation period. This deep-dive explores the specific engraving techniques, design elements, and historical context that made these notes both a collector’s obsession and a forger’s nightmare.

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The New Color Palette of the 2004-2013 Federal Reserve Notes: Design Choices Behind Each Denomination’s Hues

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Between 2004 and 2013, the Bureau of Engraving and Printing rolled out the most dramatic redesign of U.S. paper currency in nearly a century, introducing subtle background colors that broke from over 80 years of uniform green and black printing. Understanding the specific color choices behind each denomination reveals a fascinating intersection of security science, anti-counterfeiting strategy, and deliberate visual identity that every collector should know.

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The New Portrait Style of the 1996 Series: Why Benjamin Franklin’s Face Got Bigger

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In 1996, the Federal Reserve dramatically redesigned the $100 bill, enlarging Benjamin Franklin’s portrait and shifting it off-center in the most significant visual overhaul of American currency in decades. Understanding what drove those changes, and how they affect collectibility today, is essential knowledge for any serious note collector.

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Geometric Lathe Work on 19th Century US Currency: How Spirograph-Style Patterns Defeated Counterfeiters

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The intricate rose engine and geometric lathe patterns woven into 19th century American banknotes were not merely decorative flourishes but sophisticated anti-counterfeiting technology that defined an era of currency design. Understanding these patterns helps collectors identify genuine notes, spot alterations, and appreciate why certain series command premium values today.

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