single-sided all original and intact late 1940's or early 1950's vintage american industrial brightly colored cautionary "space must be kept clear" sign salvaged by urban remains at the a. finkl & sons foundry, chicago, ills. the sign is comprised of a composite or pressed wood with yellow and black paint finish. the edges contain traces of old orange-colored paint from being mounted against a wall painted time and again. the cautionary sign contains pre-drilled holes for mounting purposes. measures 10 x 7 inches.