My father passed away, and left me a model 1938 DWM Luger, but I am having trouble figuring out exactly what I have on my hands. It is serial Number 9828 with an "N" suffix. It also has a very small eagle with the #6 under it on two of the parts. On the grip-strap it has the been stamped "Ktdr.Jbg.7", although I can't figure out what unit or group or whatever that abbreviation belonged to. Any help would be appreciated. I was also wondering the approximate value of it. Thanks.