TropicalCats,
What is the original color ofyour car. Looks like from the tag it was an FC7, purple car?
I have a friend that says the tag would have been an inspection tag that went on before any of the car components went on. So pretty much this is a Body inspection tag. So it went on either with the fender tag just before primer dip and paint. Not sure though. No one has definitive proof. Just everyone thinks it is an inspection tag.
So, every inspector would have had either a stamp or a hole puncher that was custom designed by the factory just for them, this seems a little odd to me.