File:Vintage Magic Brain Mechanical Pocket Calculator, Made in Japan (11591234036).jpg - Wikimedia Commons

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Magic Brain Calculator - A vintage mechanical addiator type

Vintage 1960's Magic Brain Pocket Calculator W/Stylus, Made in

Magic Brain Calculator with instructions. 1960's.

Vintage 1960's Magic Brain Pocket Calculator W/Stylus, Made in

File:Vintage Magic Brain Mechanical Pocket Calculator, Made in

Magic Brain: Last Gasp of the Mechanical Calculator

Category:Calculator collection by Joe Haupt (from Flickr stream

Magic Brain: Last Gasp of the Mechanical Calculator

Category:Mechanical calculators - Wikimedia Commons

National Museum of American History

Category:Mechanical calculators - Wikimedia Commons

Category:Calculators - Wikimedia Commons

National Museum of American History

Vintage Magic Brain Mechanical Pocket Calculator, Made in Japan