Original Nichibutsu Frisky Tom arcade game circuit board from 1981 that more than likely doesn't work. This one is missing its sound amplifier, so the sound definitely does not work. It was tagged as, "close to working" ten years ago, so it will need some repair work. Boardset is fairly clean, no corrosion or physical damage, so it should be repairable.
Sold as-is, see photos for more details on its condition.
