This plate was spotted on a car, on the road, in New Jersey.
thanks to Bob Jorgensen

This a standard-sized (6x12) plate, but I made it a bit larger here so you can see the details.
I have no idea what the "Z"s signify.
Under New Jersey is "American State National".
Under Notice is "Private Automobile-Not for Hire".
How this guy is not pulled over every day is beyond me.