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VINTAGE 1980'S CASIO Solar Cell Electronic Calculators Sl-300 +1 Made In Japan - £6.00 | PicClick UK
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VINTAGE 1980 CASIO fx-100 COLLEGE Scientific Calculator. Has scratches, see pics - $14.99 | PicClick
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File:Vintage Casio Melody ML-90 Electronic Pocket Calculator & Clock, Plays 12 Melodies, LCD, Circa 1980 (15370587704).jpg - Wikimedia Commons
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