This is an industrial cast metal trade sign or equipment identification plaque for Walters Sheet Metal and Furnace Works. The item consists of a rectangular central plaque featuring embossed serif lettering in four lines: WALTERS SHEET METAL / & FURNACE WORKS / 1524 FIRST STREET / MILWAUKEE, WISCONSIN. The plaque includes mounting holes on the left and right sides. It appears to have been originally integrated into a circular frame or mounting bracket, which is now detached and broken into several fragments. The material is a heavy cast metal, likely iron or bronze, showing a dark, oxidized surface with significant natural patina. Traces of original green paint are visible on the fragments of the outer circular element. Based on the typography and the company's location in a major industrial hub, this piece likely dates to the early to mid-20th century.