Of interest to UK readers only this one.
Here's a snippet of news that has come out in the last few days and clarifies a law that, personally, I wasn't aware of. I had thought that the black and silver style of numberplate was only legal for pre-1973 vehicles, however apparently there was conflicting legislation that said that historic vehicles are in fact allowed to sport the black and silver number plate too. This means that any vehicle up to 1980 and registered as historic may currently carry the black and silver number plate.
Apparently DVLA are now aware of the loophole and are closing it. In closing it they are allowing any vehicle constructed (that's constructed, not registered) before 1980 to wear the black and silver number plate.
For the official word from the DVLA refer to the Federation of British Historic Vehicle Clubs news page.