Jim, sorry if you feel offended, but, on many forums , even strict militaria, you get sarcasm and wit.
I've had a few replies like it...Mentioning detracting from value does not help.... It is what it is.
Ignore the value part and probably originality, it's a 50+ year old Brit, it won't be original unless you spend a fortune that you won't get back.
One of our tooling reps always came in and told me what he had bought now... The same argument always followed... Result.. He polishes, paints and goes through 110% then trailers everywhere, I rebuild, does what is needed and ride. After a recent discussion on here, you may not even get the original colour shade anymore.
Rebuild it the way you want, ask away questions, and enjoy.
Ps, surprised you found one, most seem to be coming back across the pond , home again, by the container load. My sons B40 and my A50 both came back this year, neither will be original. Look for the bumble bee on one of my first posts!!