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Cassie McFarland, left, signs autographs for employees of the U.S. Mint in Sac Francisco, Tuesday, March 12, 2014 following a news conference. Work leader Jimmy Oliviano, center, showed up to work in a Giants jersey. McFarland watched as her half-dollar bearing her winning design was coined at the U.S. Mint in San Francisco. The unusual concave/convex coin celebrates the 75th anniversary of the Baseball Hall of Fame.