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![1950 Vintage Chadwick Magic Brain Calculator Gadget, Mint in Box, Geek Office Tool | Vintage packaging, Childhood memories, Calculator 1950 Vintage Chadwick Magic Brain Calculator Gadget, Mint in Box, Geek Office Tool | Vintage packaging, Childhood memories, Calculator](https://i.pinimg.com/originals/4e/c2/a4/4ec2a4511c3112bc0b01b355529d630e.jpg)
1950 Vintage Chadwick Magic Brain Calculator Gadget, Mint in Box, Geek Office Tool | Vintage packaging, Childhood memories, Calculator
![Magic Brain Calculator, c. 1950-1969 - Machine, Calculating | San Mateo County Historical Association Magic Brain Calculator, c. 1950-1969 - Machine, Calculating | San Mateo County Historical Association](https://s3.amazonaws.com/pastperfectonline/images/museum_136/021/2014021002-2.jpg)