AF1; Hello mate, i got your message, sorry for the delay in replying.
As others have said regarding the plate , they can be easily be changed around from car to car, especially if someone is breaking, or selling spare parts etc, so in that respect it could not guarantee that it's the first R.
The chassis number is what you need clarifying of course.
I only work on the production line, and as much as we all like to keep things in order, due to line side repairs, production delays, faults with cars etc, they dont always come off the line in order.
The only thing i can suggest is to phone HUM in Swindon [i know you have been emailing, but that wont work] and try and get answers that way.
The main switchboard number is 01793 831183 and simply ask if you could speak with a production or purchasing manager.
I cant promise that you will get an answer, i will ask around and see if i can find a way to get that vital information.
Im off for a week now, so be patient. Good luck with the call.