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1970s Electric calculator Berkey Keystone
$86$143.33store 49%
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Rare 1973 electric calculator Berkey Keystone 370 use charger model 275 5vDC. It has 18 keys. Comes in its own black zippered carry case. No charger. Has not been tested. Sold as is how i found it. excellent for everyday use. first-class materials and excellent craftsmanship ensure long-lasting durability.
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