Gold Rush

Gold Rush is a pinball machine from April 1971, manufactured by Williams Electronic Games, Inc.

Super advanced features from 1966:

Mystery Bonus (animated) ball kicks up in the back box
Gate guarded bonus mushroom bumper
Between flippers saucer kick up (opens gate to advance bonus)
Free Ball Gate returns ball to shooter
4 rebuilt pop bumpers
7 Mushroom bumpers
Can be set for 5 balls per game or 7 balls per game!