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Sparton model 557 radio designed by Walter Dorwin Teague for the Sparks-Worthington Company in Jackson, Michigan during 1936. The radio, known as the "sled" or "3-knob" is considered to be one of the best examples of Deco Streamline style. The radio features cobalt blue mirrors on the front, top, and left side, with contrasting ebony lacquer finish and five chrome bands or "speed lines." The asymmetric, geometric shapes and accent designs are distinctively Art Deco in appearance.