one of two matching single-sided brightly colored yellow enameled "space must be kept clear" caution sign fabricated by the stonehouse sign company, denver, co. the sign was salvaged from a massive switchboard box housed in the a. finkl & sons foundry complex. the sign is comprised of composite with enameled finish baked on. the orange paint found along the edges was applied to the metal fuse box. priced individually. measures 7 x 10 inches.