look blunt and broken — it may even be missing some detail.
PAPER. Genuine currency paper has tiny red and blue fibers imbedded throughout. Counterfeiters are going to try to simulate these fibers on the paper, but the counterfeit lines are printed on the surface and not imbedded into the bill itself.
SERIAL NUMBERS. Genuine serial numbers are distinctive. They are printed in the same ink color as the Treasury Seal. With counterfeit money, the serial number is a different color from the Treasury Seal and the numbers may not be uniformly spaced.
PORTRAIT. The portrait in the middle of a genuine note is going to appear lifelike. A counterfeit portrait is usually limp, lifeless, and flat, and its details merge into the background.