Casio PT-80 Electronic Keyboard. The "7" and "min" keys are untested. Original Instruction Manual (Note: features handwriting on the cover).
Vintage Casio Casiotone MT-520 Synthesizer Electronic Keyboard In Box, WORKING
Vintage Casio Casiotone MT-520 Synthesizer Electronic Keyboard, WORKING
Vintage CASIO CT-615 ELECTRONIC Keyboard 210 SOUND Tone Bank Boxed Power Adapter
Vintage Casio VL-Tone VL-5 1980s Keyboard Synth Electronic With Manual 
Vintage Casio VL-Tone VL1 Mini Synthesizer Keyboard Electronic Instrument Works
