via this auction
Pics of the inside below.
"Pictures make up most of the description as does THIS MP3, recorded from the line out.
I haven't cleaned the keyboard or the stylus much. When I cleaned off all the corrosion a few years ago, it played a bit better than this.
The vibrato switch is physically wonky, and doesn't particularly make any vibrato effect at the moment, which is a physical defect rather than an electronic one. The Vibrato, like a Stylophone, functions by making the upper (or lower) "horizontal" side of the waveform vary in length, thus altering pitch and pulse width simultaneously, which accounts for their unique sound."
