Yes - indeed very informative - thanks for sharing. According to what he describes in the book, this shotgun seems to be of the earlier type (1920's / 1930's where it was a custom made order and handcrafted copy in the "English style". I don't see any features in this gun of anything else...or any other influences. Please correct me if I am wrong. Too bad the author does not go into more specific details about specific gun makers names and so forth...any idea if there is any literature out there elaborating on this