My 1939 Luger is marked S/42 on the toggle.

I have seen what is called a 1923 Commercial Luger. They have no date stamp and the toggle has just the DWM cursive mark. The front part of the frame is the only place that carries the full serial number. I have read that these were assembled with left over or newly manufactured parts and were for sale in both Europe and the U.S.A.

They are also on the lower end of the Luger price range.