DWM 1920's commercial (i think)

[Krisgolden2007]

Good afternoon fellow guys and gals, i was directed you your forum from another gun forum. They told me this is the place to go with Luger questions.

I just recently picked up this Luger in a trade. It's my second Luger i own (other is a Erma .22 Luger). But i have a few questions that hopefully some one can help me with. This is what i know about it and correct me if I'm wrong! (cause its what i was told by the original owner, but I've found some problems with his story)

It's a DWM commercial 1920's Luger, .30 Luger is the cal. with a 3.75 length barrel. It is fully matching numbers through out the gun its original no replaced parts. Low 3 digit serial number 679. Rifling is shiny and in pretty good shape for its age. It was imported to the united states in the 20's for commercial sales.

So my questions are as follows
Is the above information correct?
Approximate year based upon serial #s?
Is the mag supposed to have a wooden bottom? because i think the plastic one is a repo?
Value? based on the conditions you can see in the pictures.
And any information on this gun or manufacture would be great!

Thanks for all you help in advance!

~Kris