Powerhouse Collection - Two Magic Brain pocket calculators

Mechanical addiator type calculators (2) with stylus, instruction manual and packaging, magic brain pocket calculator, metal / plastic / paper, maker unknown, Hong Kong / Japan, 1950-1960

Peter M. Ferenczi

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Measurements: 5.5 x 2.5 x 1/4.

Vintage Manual Pocket Calculator Stylus Subtract Multiply Magic Brain Hong Kong

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Powerhouse Collection - Two Magic Brain pocket calculators

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

Measurements: 5.5 x 2.5 x 1/4.

Vintage Manual Pocket Calculator Stylus Subtract Multiply Magic Brain Hong Kong