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File:Vintage Old-Style Transistor Radio Batteries, Type No. 226, 9 Volts (9738573526).jpg - Wikimedia Commons
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File:Vintage Old-Style Transistor Radio Batteries, 9 Volts, Type No. 266 (9735936131).jpg - Wikimedia Commons
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File:Vintage Old-Style Eveready Energizer Transistor Radio Batteries, 9 Volts, No. 266 (9738550312).jpg - Wikimedia Commons
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