Welcome of the forum. You'll enjoy your time here.
Looks like you have a nice collectible Luger. Congratulations.
Check out our FAQ PDF document for many reference facts about your new Luger.
It answers many questions, and makes a great reference to keep on your phone for later usage:
http://forum.lugerforum.com/showthread.php?t=13121
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Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.