Black plates?

Hey, I always see guys talking about California black plates, what's the deal with them, my 54 210 came with the black plates in the trunk, are they of value? or only if I lived in Ca? Thanks, HFH

 

there was a post about this not to long ago, try the search feature. Short story, cant use them in CA unless they were continuesly registered. So if the car wasnt registered and sat and therefore is not in a computer at the DMV, cant use them. Out of state I would image that you have to use your states plates anyways.