p ballon
im pretty sure i have one,
i can send pix
marked sk 6,
3 pcb pile on a metal back board
at first i thought it was nibbler but nibbler does not have a 3rd board on top, and the only other board it can be according to a chart on mikesarcade .com list is pioneer ballon
it came from a op bulk buy from a box marked working out of conversion
id like 80 shipped
if it does not work i would take it back