early 20th century salvaged chicago exterior cast iron commercial building kellogg-mackay-cameron standpipe system plaque

weathered and worn original early 20th century antique american single-sided cast iron fire department standpipe system wall plaque salvaged from a downtown commerical building. the wall plaque was fabricated by or for the kellogg-mackay-cameron company, chicago, ills. the plaque is free from cracks or breaks.