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5 of 26 from Making coin at the U.S. Mint (photos)
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The next step after the negative plaster casting is to produce a final positive plaster casting. This will be used as the basis for the coin, or, in this case, medal.
Click here to read the related story on the production of American coins and medals at the U.S. Mint in Philadelphia. And click here to check out the entire Road Trip 2010 package.
July 8, 2010 4:00 AM PDT
Photo by: Daniel Terdiman/CNET
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