The U.S. dollars issued by the FED (Federal Reserve System) is the official currency not only in the U.S. but also in many other countries. Due to the fact that this is the most international currency it is also one of the most frequently counterfeited. Since the beginning of the eighties of the last century the dollar bills have practically the same old protections. As a result it made them the least protected and additionally supported currency counterfeiting. Only in the years 2004-2011 new security features were introduced which correspond to the current standards in the world.

The U.S. banknotes are printed on paper from Crane & Co. company. The paper is composed of approximately 75% cotton and 25% linen. Obviously, the detailed composition of the paper is a top secret information. In order to be even more difficult to counterfeit a mix of colored threads are embedded in the paper. Additional protection is embedded strip with microprint and watermark. Banknotes are printed in a special printing technique (convex). Such kind of printing is used in some parts of banknotes: the portrait, the name of the issuer, denomination - both numerical and verbal, and almost the entire image of a famous person on the front of the banknote. When touching microprints with fingertips we feel bulge.

The leading colors of banknotes - black and green - haven't changed for decades. Newer banknotes, series since 2004 have shades of bright pastel colors.

On the obverse side of the banknote is a person connected with the history of the U.S.:

  • 1 USD - George Washington - first president of United states
  • 2 USD - Thomas Jefferson - third president of United states
  • 5 USD - Abraham Lincoln - sixteenth president of United states
  • 10 USD - Alexander Hamilton - first Secretary of Treasure
  • 20 USD - Andrew Jackson - seventh president of United states
  • 50 USD - Ulysses Grant - eighteenth president of United states
  • 100 USD - Benjamin Franklin - one of Father Founders of United states

and, among others: denomination, the signature of the Secretary of the Treasury and the Treasurer of the United States, the name of the state, the serial number and the seal of the Treasury Department.

On the reverse side are:

  • 1 USD - The Great Seal of the United States
  • 2 USD - signing the Declaration of Independence
  • 5 USD - Abraham Lincoln Memorial
  • 10 USD - U.S. Treasury building
  • 20 USD - White House
  • 50 USD - U.S. Capitol
  • 100 USD - Independence Hall in Philadelphia

The notes have different kinds of security depending on the date of issuing. Methods of protections changed with the years of issuing and the development of technology.