More questions

[Ken Lauderback]

Thanks to everyone who has responded to my previous questions. Now, a couple more:
I think this magazine I got with the 1917 Luger must be a reproduction. Someone said that it should have a wood bottom; plus--I can only get 7 rounds in this thing, and the spring seems excessively strong to me. What would be "correct" for this? I don't mind the reproduction thing; I really can't justify spending $100 for an original magazine, but someone mentioned that there is a fellow called "Viggo" who has repro wood bottoms. How can I contact him? And what type of magazine should I get?
I see a couple of (expensive) wood bottom mags on ebay; am I correct in assuming that if they are lettered "Germany" on the bottom that they are from commercial pistols rather than military?
And finally (for now ) is there any one particular book that details what is correct for the different model Lugers (similar to Clawson's book for the 1911's?)
Thanks again, and here are photos of the magazine: