Kevin,

I'm sorry to mislead you in any way by referring to your gun as a "BBF". It is in reference to your gun being a "Bockbuchsflinte". I'll stay away from acronyms. These German guns can be a piece of work when it comes to identifying marks. You have a good start by having a maker’s name. I have a lot of German gun catalogs from the day but no G. Wilcke. Are you a member of the GGCA? Some of those guys have a boatload of knowledge that can make your day at times.

Marcus