The Maine Centennial half dollar is a commemorative coin struck in 1920 by the United States Bureau of the Mint. It was sculpted by Anthony de Francisci, following sketches by an unknown artist from the State of Maine. Fifty thousand pieces, half the authorized mintage, were struck for release to the public. They were issued too late to be sold at the centennial celebrations in Portland, but eventually the coins were all sold to the public, though relatively few to coin collectors. They catalog for hundreds to thousands of dollars, depending on condition.