A revamped $100 bill will enter circulation for the first time on Tuesday with additional design features that will make it more difficult to forge.
The image of Benjamin Franklin, the scientist who was one of America's founding fathers, remains on the note, but it has been modified to make it "easier for the public to authenticate but more difficult for counterfeiters to replicate," the Federal Reserve board said.
The new bill includes a blue 3D security ribbon and ink which changes from copper to green when the note is tilted. Both features are particularly difficult to fake, according to the Fed.
The release was originally planned for 2011 but delayed after production problems caused the notes to crease and left blank spaces.
Research and development for the new note took 10 years, with the Fed, the US secret service and the Treasury department working together on the project.
US authorities say the $100 bill is the most counterfeited of all American banknotes.