Vtg 1960's Mechanical Pocket Calculator - Made in Japan - Magic Brain

, This one is not branded Linemar or Vanguard Magic Brain but this is the exact same modelling and moulding. In working order (see video)

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Antique Mechanical Calculator FOR SALE! - PicClick UK

Vtg 1960's Mechanical Pocket Calculator Made in Japan magic Brain

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

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Magic Brain Calculator (Japan) w/instructions Unused