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File:Vintage RCA Portable Radio, Model 6BX6, Broadcast Band Only (MW), 4 Tubes, Made In USA, Circa 1954 (14897952222).jpg - Wikimedia Commons
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File:Vintage RCA Portable Radio, Model B-411, AM Band, 4 Vacuum Tubes, Battery Powered, Made In USA, Circa 1950 - 1951 (32753344002).jpg - Wikimedia Commons
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