Fascinating stuff! Quite the find there.
When the pinballs could pull in $100 - $150 or more a week (in 1987 dollars), they were certainly worth operating.
Real interesting stuff.....
Would say that the pins circa 1977 - 80 would of been taking double that
More than double - easily - especially when they changed from 10 cents to 20 cents. Mid 60s to early 70s was where most of the action occurred.