The first-ever coin to feature readable Braille is now on sale from the U.S. Mint. The silver (90 percent) dollar features a portrait of Louis Braille, the inventor of the system used by blind people worldwide, on one side with the image of a young boy reading a book in Braille on the flip. Above the boy are the Braille characters for "Braille."more at
http://www.cnn.com/2009/US/03/26/braille.coin/
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