This certificate of authenticity was issued by NASA and signed by the STS-79 mission crew to certify that the accompanying set of Smithsonian commemorative coins was flown aboard the Space Shuttle "Atlantis" during September 16-26, 1996. Two sets of coins commemorating the 150th anniversary of the Smithsonian Institution were flown in space and then presented to the Institution by the crew in a ceremony at the National Air and Space Museum. One set remains in this Museum and the other is held in the Numismatics Collection of the National Museum of American History.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.