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(CNN MONEY) -- After a three-year delay due to slower-than-expected production,Americans will finally have an improved, high-tech $100 bill for theirwallets, the Federal Reserve said Wednesday.

The bill is set to debut on Oct. 8.

What's so special about the new greenback? To start, the Fed says thethe bill is a culmination of a decade-long research and design process.

The note features a series of amped-up security measures aimed atcombating counterfeiters, including a blue, 3-D security ribbon on thefront of the bill that moves when the note is tilted back and forth andside to side.

The inkwell and bell on the front of the bill andthe number 100 on the right-hand corner also change from copper togreen when the note is tilted.

This is the fourth time the $100bill has been redesigned, according to a Fed spokeswoman. It has beenrevamped three times in the last 20 years alone, as the Fed had to reactmore often to improved counterfeiting technology.

The design was first unveiled in 2010 and was meant to go into circulation in Feb. 2011.

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