A rare guitar from the late 1980s, Casio only produced MIDI guitars for 2 years in '87 and '88.  The MG-510 has a bolt on maple neck, 22 fret rosewood fingerboard with dot inlays, HSS pickup configuration and a five way selector switch, and most importantly has onboard MIDI controls.  The guitar plays great and the MIDI powers up but unfortunately we have no way of testing it.  Overall, the guitar is in very good condition, as you can see the knobs are missing, and will come in a new aftermarket gig bag.