Among the most dramatic and visually striking error notes in American currency collecting, missing overprint errors represent a complete failure of one of the Bureau of Engraving and Printing’s final production steps. Whether a note escaped without serial numbers, Treasury seals, or both, these pieces command serious collector attention and can fetch thousands of dollars at auction.
Read More →Serial number ink smear errors rank among the most visually dramatic overprint mistakes in small-size U.S. currency, yet many collectors struggle to distinguish a genuine drag smear from a post-printing accident. This guide breaks down the mechanics, authentication markers, major known examples, and current collector values for this fascinating error category.
Read More →The brown seal overprints on Series 1929 National Bank Notes are among the most frequently misaligned impressions in all of U.S. paper money, and the reasons go straight to the heart of how these notes were manufactured. Understanding the mechanical and logistical causes behind these skewed seals, charter numbers, and bank title prints helps collectors identify genuine errors, distinguish them from post-issue damage, and make smarter buying decisions in today’s market.
Read More →When the Bureau of Engraving and Printing applied the wrong overprint to National Bank Notes, the results were some of the most dramatic and collectible errors in all of US paper money. This deep dive covers the mechanics behind these blunders, the most famous confirmed examples, and exactly what collectors should know before chasing one of these legendary rarities.
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