From memory - Bally and Stern tombstone targets are the same, just with different artwork.
The Hooded Bally (starting with Paragon) are different from the Stern Hooded.
The Stern hooded are on several games - Galaxy, Flight 2000, Freefall and many others.
You can see the differences on the PBR website -
http://pbresource.com/pfdroptar.htmWhat game is it for ? I've not heard of a different Stern target other than the tombstone and hooded ?