Not many of these games from 1984 are out there. About 100 machines were produced by WMS and then the plug was pulled, making Star Light the last System 7 pinball game.
I personally know of 3 in the world that are complete and working, one of which was a System 9 prototype game. There are probably a few more that are quietly owned by collectors.
The usual ‘Instruction Booklet’ was never produced when the run was abandoned. A hasty ‘Service Booklet’ was made available to operators.