Here's a link to our FAQ PDF document, which you'll find quite useful for reference.
http://forum.lugerforum.com/showthread.php?t=13121
Welcome to the forum.
The acceptance stamp on the bottom of the magazine is a Weimar Eagle (droop eagle) over 63. It was made by / for Mauser.
I'd estimate your Luger's value with the magazine at $1600 if the Luger's numbers are, in fact, matching. There are internally numbered parts that would need to be checked, along with the inside of the grips .
Use extreme care when removing the grips - especially the left one - so as not to chip them near the top and the safety lever.
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Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.