Bally Model 809-B Table Top Slot Machine Circa 1967 | #1912552846
Bally 809B upper unit problems - YouTube
Bally 809 Winner Paid willl not clear after max jackpot. *resolved*
SOLVED: The author purchased a slot machine (Bally Model 809 ), and tested it by playing it 1197 times. When testing the claim that the observed outcomes agree with the expected frequencies,
809 Multiplier - Slot Machine by Bally Manufacturing Co.
Bally 809 B 5 coins multiplier Triple BAR - YouTube