Again, can not see the marking well enough, but everything seems like a VOPO luger. Maybe it has a new dip blue color. Served during the WWII and after that in east german police.
I think it is a very good gun to have in your collection. Very much interesting history. And if you want, a shooting pistol. Anyway, there are many more forum members that know much more than I do. Wait for more comments.
I do think, that I am a beginner all the time, because these people in this forum bring up new things all the time.
And english language is not my mother tongue...