Now, Dwight...with that gun and some number stamps, YOU could own an all matching BYF 1940 Luger! [Only one known...see photo!]
http://boards.rennlist.com/upload/byf-40.jpg
Many years back, In Pleasant Hill, CA, I examined a 1937 date BYF that was all matching, too. [I did not believe it, either!] it had a mix of Rust/Salt blue parts.
..I wish I had recorded the SN but I did not.