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File:Vintage Zenith Royal 810 AM-FM Transistor Radio, 9 Transistors, Made In USA, Circa 1966 (22599658652).jpg - Wikimedia Commons
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File:Vintage Sony Transistor Radio, Model TR-810, AM Band Only, 8 Transistors, Made In Japan, Circa 1959 (25365565109).jpg - Wikimedia Commons
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