Essential Security Features
Authentic U.S. $20 bills incorporate multiple layered security elements:
- Color-shifting ink: Tilt the bill to see the numeral “20” change from copper to green.
- Watermark portrait: Hold the bill up to light to reveal a faint replica of President Jackson’s image.
- Security thread: A vertical embedded strip reading “USA TWENTY” under ultraviolet light.
Tactile Verification Methods
Raised printing should be noticeable on the portrait’s shoulder, treasury seal, and serial numbers. Genuine currency paper contains distinctive red/blue fibers and feels crisp – counterfeit bills often feel waxy or unnaturally smooth.
Microprinting Inspection
Examine areas around the collar (“THE UNITED STATES OF AMERICA”) and treasury building borders with magnification. Authentic microprinting appears sharp – blurred text indicates counterfeiting.
UV Light & Magnifier Checks
- The security thread glows green under UV light
- Random red/blue fibers become fluorescent
- Background colors remain matte (no UV glow)
Serial Number Validation
Compare both serial numbers – discrepancies signify counterfeits. Verify alignment: Authentic bills show perfectly spaced, uniformly sized characters printed with consistent ink saturation.
Action for Suspected Counterfeits
Do not return counterfeit bills. Contact the U.S. Secret Service or local law enforcement immediately. Limit handling and place in protective material until authorities arrive.
