People who handle money on a regular basis ... Red and blue fibers have been a longtime ingredient of U.S. currency paper. Special features like these fibers are embedded in currency paper ...

Confederate paper money was a promise to exchange the bill for gold or silver, but only after the Confederacy won the war.

"A 'washed' note is an authentic U.S. currency note that has been washed ... "pen test," where a special marker is used to check the paper to make sure that it's a real bill because the paper ...

Intaglio printing is what gives the U.S. currency its distinctive look ... which transfers the ink to the paper. The enormous pressure causes the paper to be embossed with the ink, thus giving ...