Mechanically speaking 8,590,000 is the highest possible score for this machine. I made a video of my findings.
So they probably wanted it to be higher at one point ( WMS Twenty Grand?) but things fell apart? I don't know much about other games of this era and if they had similar score values? Here's what I gathered. It keeps me scratching my head.
The machine before Fairway was Times Square. The millions I assume are lit building windows and there are easily 10 windows that could become lit if we dismiss the 3 on the extreme edge of the backglass. Starlite before Times Square seems to be distinctively 9. Silver Skates before that also 9. Twenty Grand before that....9. Then Disk Jockey and Four Corners were only 7
The game after Fairway was Palisades and the millions are hidden in a palm tree so good luck figuring that out.
The game after Palisades, Grand Champion, has 9 distinct banners for millions.
THEN came C.O.D (Clothes on Display? Call of Duty?) and that only has 8 million.
Did they keep making these things short a bulb? I assume most of these were built with the same steppers.