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This picture is a perfect Pittsburgh Steelers wallpaper, it’s featured with a photo of a Steelers helmet. The Pittsburgh Steelers Helmet is unique, the helmet has only one logo on the right side. The Steelers logo is based on the Steelmark logo belonging to the American Iron and Steel Institute (AISI). Created by U.S. Steel Corp. (now known as USX Corp.), the logo contains three hypocycloids (diamond shapes).
