The old 100 Dollar note will continue to remain legal.

The new currency note, to be issued from February 2011, is designed with advanced technology and was unveiled by officials of the Treasury Department, the Federal Reserve Board and the United States Secret Service and retains the traditional look of the U.S. currency.

''As with previous U.S. currency redesigns, this note incorporates the best technology available to ensure we're staying ahead of counterfeiters,''

Treasury Secretary Tim Geithner said. The new design for the 100 Dollar note retains three effective security features from the previous design--the portrait watermark of Benjamin Franklin, the security thread, and the color-shifting numeral 100.

 It also displays American symbols of freedom, including phrases from the Declaration of Independence and the quill the Founding Fathers used to sign this historic document. Both are located to the right of the portrait on the front of the note.

The back of the note has a new vignette of Independence Hall featuring the rear, rather than the front, of the building. Both the vignette on the back of the note and the portrait on the front have been enlarged, and the oval that previously appeared around both images has been removed.

 ''When the new design 100 Dollar note is issued on February 10, 2011, the approximately 6.5 billion old design 100 Dollar notes already in circulation, will remain legal tender,'' said Chairman of the Federal Reserve Board, Ben S. Bernanke.