unique single-sided c. 1930's flush mount single-sided safety first and/or "think" sign designed and fabricated by the stonehouse sign co., denver co. the factory lavatory or "toilet room" instructional sign is comprised of heavy gauge die cut steel with original baked enameled finish. the sign contains four small screw holes in each of the corners for mounting purposes. surface wear and rust formation along the edges evident. two identical "think" signs available. priced individually. measures approximately 14 x 10 inches.