Our collection of Aviation enameled signs are authentic reproductions, utilizing the same process popularized during the eary 1900's. With Andy Rooney signs,the colors are not just paints. Finely ground glass crystals are kiln fired at 1350 degees and fused to a heavy steel plate. Each sign is durable, lustrous, and rustproof. Collectible for their quality as well as their true visualization of the times. Size 13.5" X 9.5"