Deldriver,
I remember while visiting one of the BHAMA Gang friends of mine, he was peeling off the 'BLACK' from the same area on a Bavarian he had just purchased from the south store. It was like a black tar, after removal it clearly read Bavaria Forest etc. Other than that we couldn't find anything out of the norm of a rebuilt US WWII carbine (?) go figure, it was also a late NPM.
I don't own any but will say with the research Jim Mock has done, they are a lot more interesting to me.

Especially a recent Railroad model I believe it was him who had picked up on GB.

Cheers
CH-P777