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File:Vintage Regency TR-1 Transistor Radio With A Clear Case (Likely For Demonstration Purposes), Has A TR-1G Serial Number But A TR-1 Tuning Dial (22881158556).jpg - Wikimedia Commons
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File:Vintage Regency TR-1 Transistor Radio, Mahogany Color, 4 Transistors, Made in USA (9804504753).jpg - Wikimedia Commons
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REGENCY TR-1 THE FIRST TRANSISTOR RADIO SM Service Manual download, schematics, eeprom, repair info for electronics experts
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