Hi, and welcome to the forum.
Looks like a mixed parts DWM 1914 Luger. At least the take down lever and trigger plate have been replaced. Finish may well be original, but it's hard to judge in photos. Look for halos around the numeric digits stamped into the barrel.
There may be a suffix letter under the numeric digits on the frame. If so, it's part of the serial number.
The coarse stitching of the holster may not be typical of a period WW-II holster, and the pattern looks like it's possibly a P.38 holster.
There is alot of information in our FAQ document. Please enjoy.
http://forum.lugerforum.com/showpost.php?p=287575
As a higher end mismatched pistol, it's probably worth $750-$850 if it functions properly.
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- Therefore if you want peace, prepare for war.