Inspired by the movement of a 1920s pocket watch, the design has been etched out of a solid sheet of heavy copper and then patinated and lacquered. James also made the solid red mahogany frame. Including the frame, this piece measures 13 5/8" square by approximately 2" thick. The plaque being sold here is number 3/20. It is numbered and initialed on the front and numbered and signed on the back.