Marcus, No problems! I understood the "BBF" as the acronym. I just havent seen any advertised previous to the 20's.(in my small world!) I have emailed back and forth with Mr. Apel and he feels that G.Wilcke in Stuttgart was a disributer. I have an identicle down to the engraving drawing of this gun for sale in a Max Knoll 1925 katalog,but was he just another distributer? And for how many years was this gun available? I think that mark is "SK" or "EK"? I would like to know what those"k's" on the squares are too!

Andreas, I will look for that "GM" but I don't think it is there. Kevin.