In September 2016 Ebay seller marisaland (aka ismaa3) from El Soto and La Fresneda in Spain was selling these Gibraltar and UK (GB) diplomatic plates.
He says all of them are used and all of them were made in Spain. I am sure they were made in Spain but they have never been used.
The diplomatic plates are still on the official cars in London with the Fiji and Spain embassies. All his Perspex (Plexiglass) plates are made the same way, have the same unused holes and when compared together are so obviously fakes.
The Gibraltar governor plate is still on the official car in Gibraltar.
If he wants to sell reproductions, he should say so and not try to fool collectors by claiming they are genuine. Better not to buy anything at all from this seller as so very many of his plates are not what he describes them as.