This game has a long history from 1909 to today. Philadelphia Tobaggan Company started it all. Deltronics labs brought the game into the electronic realm. Now the operating entity is called Skee Ball Amusement Games.
This is a Model E. The first electronic models were in 1974 and called Model D for Deltronics, the company that was retrofitting the mechanical games with their electronics. Some deal between PTC and Deltronics brought that technology in house and the Model E (for electronic?) was created. Current machines (since the early 1980's) are either Model H or Model S.
After much of the sanding and scraping It seems these early electronics followed the old mechanical Brown sides, Green alley and Yellow toppers color scheme.
