Quoted from bluespin:
This is a home model:
Game/Type: Fireball Home Model / SS Series I using CPU board 0606-00905, Series II using CPU board 0614-00913 4 Player
Month/Year: October 1976
Location: Poplar Grove, IL
ebay.com link » Pinball Machine
Quoting the seller: "I'm selling my 1972 balky fireball pinball machine home edition. It dosent work but we got it to work for a little bit and then it stoped"
This is the 1976 home edition (see start button). I didn't know there was a pinball manufacturer called "Balky" Is it based on the island of Mipos?
Seems to fit the description of the games current state.