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If you want to spot a fake $20 bill, use these methods: Check watermarks & color-shifting ink Use magnifying glass Use a light source Rely on common security features Check registration Give it a 'feel' Bad-looking Ben? Take it to the bank What if you had a twenty-dollar bill in...
Our favorite fancy serial number lookup site is MyCurrencyCollection PennyHoarder also has a great review of valuable serial numbers If you want to check serial numbers in bulk, we recommend the CARNATION Mixed Denomination Bill Counter. It includes a serial number recognition feature, allowing you to: capture and...