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File:Vintage Zenith Royal 755LG Portable Transistor Radio, Chassis 8CT41Z2, AM Band, 8 Transistors, Made In USA, Circa 1960 (49040781402).jpg - Wikimedia Commons
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Vintage Zenith Deluxe ROYAL 755 LK All-transistor Radio Standard AM Broadcast | Transistor radio, Radio design, Transistors
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File:Vintage Zenith Royal 7000 Trans-Oceanic (Transistor) Radio, Chassis 18ZT40Z3, Made in the USA (12125483556).jpg - Wikimedia Commons
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