Vintage 1960s MAGIC BRAIN Pocket Mechanical Addiator Calculator Unpunched NOS

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VINTAGE KINGSON MAGIC brain pocket calculator with stylus Hong Kong £17.11 - PicClick UK

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

VALIANT PERSONAL CALCULATOR with Metal Stylus-Sheath-Instructions

VINTAGE MAGIC BRAIN Calculator 1960s MIP Unopened - made in Japan £29.71 - PicClick UK

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VINTAGE ADDIATOR DUPLEX Mechanical Calculator with Leather Case £19.75 - PicClick UK

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

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