DescriptionStop Look changeable message sign is internally illuminated with incandescent bulbs. It has two-part metal cabinet with two-color, vacuum-formed face at top reading "Stop Look" and three-row reader board below. A selection of 30 letters and punctuation are included, each of which is reverse screen-printed in red on clear flexible plastic. Sign originally sat in the window of a service station in Denver, CO and then a garage of the owner of the service station. The Stop Look Sign Company was an L.A.-based changeable copy/menu board/ trailer sign type of company.