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APF Mark 40 Handheld Electronic Calculator | National Museum of American History
APF Mark 21 Handheld Electronic Calculator | Smithsonian Institution
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File:Vintage APF Mark V Electronic Pocket Calculator, Flip-Up Cover Over Display, Battery-Level Meter, Made In Japan, Circa 1973 (14012007817).jpg - Wikimedia Commons
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CANON X MARK II DESKTOP CALCULATOR 12 DIGIT BLACK Dynamic Office National
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apf Mark 40 Calculator
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apf Mark V
APF Mark V Handheld Electronic Calculator | Smithsonian Institution
