Thanks for the reply,
Yes, I bought it from the guy that got it from Barac & Pervan. So far from what I have researched it seems genuine. The engravings and stamps as you say, look authentic. Don't know what KK screws look like, but these seem well used and vintage. Of course this is my feeling of it.
I am still looking for some other badges and trying to find out as much as I can about differences in manufacture and so on, so any help is welcome.
Thanks again for the reply,
Jovan