Tin enameled signs are authentic reproductions utilizing the same process popularized in the early 1900s. The colors are not paints, but finely ground glass crystals which, when kiln-fired at 1,350 degrees F, fuse to the heavy steel plate. Each color is applied and fired separately, creating durable, lustrous, and rust-resistant collectible signs. Made of 24 gauge metal with holes on the edges for easy mounting.