<p>Original 1943 electrical trade vintage ad for <b><span style="font-size: 14px;">COPPERWELD STEEL COMPANY. </span></b>Main office and plant was located in Glassport, PA.</p><p> Manufacturers of Wire. </p><p>The Strength of Steel, the Conductivity and Permanence of Copper.</p><p>It's the combination of copper and steel in Copperweld that makes it the ideal wire where strength and permanently good voice transmission are required. Steel provides strength, but lacks rust resistance and electrical conductivity. Copper provides rust resistance and conductivity, but lacks strength. The best characteristics of both metals are united in Copperweld.</p><p>Unbound from a 1943 electrical engineering magazine, this unique old one-page advertisement would display beautifully matted and framed. Nice graphics. World War 2 propaganda. A fabulous addition to your retro electrical library.<br></p>
- Mfg Part # zl407
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