Dear Alvin,
Just to answer your first question: "Who's Görtz?"
I have received this from Mr. Kornmayer. This description is also available in my web site where I have introduced Mr. Görtz as well. Originally it is an answer to a similar question raised years ago in Auto Mag.
I guess Mr. Kornmayer summarizes clearly what Mr. Görtz represents for all the Luger enthusiasts.
The researches made by these two gentlemen are a milestone for all the Luger enthusiast.
I hope this helps.
Mauro