FAKES !! This page is for other fake NJ plates which have appeared.
This was seen on eBay in Feb 2016... what the heck IS this ??

New Jersey Fake License Plate Governor

The seller described it like this:
This is a strange plate because the front is made of some sort of composition over steel metal.
A magnet sticks to the back of it. From the side there are two metal plates cast into it.
You can see the front corner has a chip. It is a hard substance of some sort.