1876 U.S. Centennial Exposition. Exposition Building Dollar--Main Building. Copper. 43 mm. HK-81. Rarity-6. MS-64 BN (NGC).,Vivid blue, lilac and rose undertones enhance otherwise orange-copper surfaces. The strike is full and the fields are semi-reflective. Scarce. While this item uses the name Centennial "Exposition," the event was actually called the Centennial Exhibition.From the Henry Edward Collection.