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Vintage 80's Casio PT-1 Synth Synthesizer Electronic Keyboard Demo Song & Features - Classic Sound - YouTube
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Vintage Casio PT-80 Mini Electronic Piano Keyboard w/ROM Pack Tested Working for Sale in Montclair, CA - OfferUp
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Casio PT-1 Mini Synthesizer | 1980's | Vintage Casio PT-1 Mini Keyboard | Extremely RARE Gold Colour | Reverb
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Vintage 1984 Casio Pt-80 Portable Keyboard Synthesizer PT80 Mini Synth ROM Card for sale online | eBay
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