Quoted from EM-PINMAN:Interesting is that I have a different style target face on mine but it looks original. I wonder if the early and later production models had different target faces?
This is just a substitute drop target someone used to replace the one that probably broke on your game at one time. It was used on a few Williams games... such as Teacher's Pet, Merry Widow and Eager Beaver.
Original should be the sun face.