original c. 1940's american industrial single-sided exterior baked-on enameled "no trespassing" fence perimeter caution or warning sign. the heavy gauge cold-rolled steel sign was likely fabricated by the read-made sign company, new york city, ny. the weather and worn sign contains multiple holes along the edges for mounting purposes. the sign has a largely intact white enameled background with big black lettering. only one available in this configuration.