Ian, Ken's excellent reply convinces me I am definitely not qualified to advise on the authenticity of any Jeep (although I suspect that mother of a boil-up might just turn out to be red dirt road dust? :cool2:).
But I think I might be qualified enough to give you simple advice - as just a general mv enthusiast - on whether it looks good or not -
Yes, it does! So you really need to decide what it is you want.
If you want a totally authentic Jeep which will stand the closest scrutiny from those know know and understand Jeep DNA, I'd recommend you take someone suitably qualified with you when looking.
If you just want a really nice looking Jeep to simply enjoy the pleasures of driving and participating in events to entertain the general public, go and find yourself the tidiest example you can within your budget which is mechanically well sorted and which should therefore be reliable, and which makes you think you are looking at a real wartime Jeep.
The danger here is - you might end up paying more than you should have for what turns out to be not quite as correct / original as it should be.
But if you like it and it looks good, and you get years of pleasure out of it, is this really such a problem?
I recently decided not to take my 1949 CJ3A and make it look cosmetically much more like a wartime example (which would have devalued it and cost the same - when added to the base Jeep value - as buying a nice wartime example!!), and instead bought a really nice wartime example. Fortunately, when I had a very knowledgeable Jeep expert look it over (after I had got it home :shocked:) it passed with a very respectable score. Maybe I was lucky, but I've seen enough Jeeps to know what looks good, and when I drove this one it somehow just felt right for me, so decision made. Since I have no intention of selling it, any difference between what I paid and the actual value is of no great importance.
I have the greatest admiration for those who seek perfection in their Jeeps - and aren't there some stunning Jeeps out there as a result! Just because I can't tell the difference between a totally authentic Jeep and one built up to look like one, doesn't mean I get any less enjoyment out of Jeep ownership.
So good luck with your search, and simply smile when someone chooses to be critical of any aspect of your choice :-D