Frank Lloyd Wright designed and patented a series of forty-five prisms of clear glass tiles to refract light for the Luxfer Prism Company. Wright designed The Luxfer Prisms Office Building in Buffalo, New York, 1896-97, with the front and rear walls of the building made entirely of Luxfer Prisms. This clock incorporates two of the Luxfer Prism designs, including the flower design that was the only one that was ever actually produced. Features: Metal case in a bronze finish, Raised hour markers on the dial, protected by a convex glass lens, Quiet sweep seconds hand.