Gary,
A wooden bottom magazine is correct for your gun, but unfortunately it is rather rare to find a gun this old with the original magazine. Markings on the front grip usually give details about the unit in which the gun has served. Here's my DWM 1911 (with matching magazine) and its front strap marking.
As for taking pictures, I usually try to get as much daylight as possible but not direct sunlight. Direct sunlight creates too sharp contrasts and shades, usually a diffusor is needed. Also, when doing close-ups I've found that it is often better to do a hi-res shot from a distance and then cut out and blow it up, rather than use the macro which tends to barrel-shape the object. At least that's my experience with my Leitz Lumix. Your Nikon D200 should have no problems doing this.
For the picture of my Luger I used the scanner.
Good luck with your Luger and welcome to the sick bay (Lugeritis)!
Balder