By the sounds of it you have a "G4 Edition" Vehicle, These were built on the back of the challenge to sell through the dealer network and Land Rovers important link to its buyers as there was no access to the challenge vehicles at the time. It was their way of saying here is your piece of the G4. The Editions have reg numbers from 52 plates to 54plates. There were 200 built for the UK market and that number is split between 4 colours, Silver, Black, Yellow and of course Orange. Orange and Black were the 2 most popular colours followed by silver leaving the yellow being the rarest. (exact numbers of each colour are un known)
Below is a few pics from the sale booklet they did and you will see that there are multiple colour options and bits of additional kit added to the vehicle.
We welcome all G4's Event and Edition to the club, even non G4's. We do say that Event and Edition take priority on club stands at events but everyone is welcome. The plan for the club this year is to build the presence of Editions in the club because a lot of people dont think that they are that important.. we want them to take pride of place centre stage this year.
Shout if you need any more info, youy can find details on joining the club on the link here..
https://www.g4ownersclub.com/joining-the-clubThanks
Jon