Banknote Security
3 articlesAuthenticating genuine notes and understanding anti-counterfeit design define Banknote Security coverage. Materials explain visible, tactile, ultraviolet and machine-readable features such as watermarks, threads, holograms, microprinting and polymer elements, alongside official checking guidance. The category addresses how security works and how suspicious notes may be assessed, rather than documenting a new series as a launch event or tracking whether an older series remains legal tender.
How a 1976 $2 Bill Serial Number Error Became a Collector's Rarity
A rare 1976 $2 Federal Reserve Note with a seven-digit serial number mismatch reveals the mechanical failures that can create some of the most intriguing and valuable errors in U.S. currency collecting
How Bronze Surcharges Created Rare U.S. Fractional Currency Errors
Bronze surcharges were added to U.S. fractional currency in the 1860s to deter counterfeiting, but the process led to unique printing errors. Collectors and historians now study these mistakes for insights into early U.S. banknote production and security.
Cambodia Warns of AI-Generated Counterfeit Banknotes Threat
Cambodia's central bank is alerting the public to a new wave of AI-generated counterfeit riel banknotes, raising concerns about the impact on currency trust and the ongoing dominance of the US dollar in daily transactions