Magic Brain Calculator - A vintage mechanical addiator type

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Vintage 1960s MAGIC BRAIN Pocket Mechanical Addiator Calculator Unpunched NOS

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National Museum of American History

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Vintage 1960s MAGIC BRAIN Pocket Mechanical Addiator Calculator Unpunched NOS

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Magic Brain Calculator - A vintage mechanical addiator type calculator, 1950-60s - Aluminium, Plastic, original packaging - Catawiki