I just got my first luger not too long ago, and am starting to develop an interest for all things Luger. But what I am kinda curious about is Luger mags. Please leave info/discuss them.
I know they hold bullets

But what about serial numbers, different types and stamps? I have seen the black plasic bottom ones, were these for the black widow? And I see many people talking about serial numbers on the bottom, why doesn't mine have one?? There are the black plastic bottom ones, wooden bottom and I think aluminum bottomed ones. What dates were these produced.
I really don't know much at all about them, please fill me in on what you know.