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File:Vintage Casio-Mini Electronic Pocket Calculator, Model CM-602, 6 Digit Fluorescent Display Made In Japan, Circa 1973 (14184440031).jpg - Wikimedia Commons
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File:Vintage Casio Pocket-Mini (aka P811) LED Handheld Electronic Calculator, Made in Japan, Circa 1976 (8714450871).jpg - Wikimedia Commons
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