Hello Larry,
I will place a WAG (wild a** guess) but I think yours is a 1906 Commercial luger made by DWM...(with a short frame, grip safety, and no chamber marking).
Not sure when it got its shorter barrel that appears to be in .30 luger caliber...maybe during the Weimar rework era (???).
The front sight is also not DWM original and appears to be a "marble bead" type...not sure when those were available...1920's-1950's...???
The photos are a bit out-of-focus...
I have heard stories that many luger owners around 1968 were afraid of USA gun laws about stocked weapons, so this is when your stock lug may have been modified...
Your magazine appears to be a brown-type issued with Swiss lugers made by the W+F Bern factory in the model 1929 series lugers. If you look closely in the right-side, dished portion of the magazine bottom, you might see a very small Swiss cross molded into the brown plastic. There might even be a scriptic "P" showing on the back spine of the metal magazine tube...
Regards,
Pete... <img border="0" alt="[typing]" title="" src="graemlins/yltype.gif" />