Thanks for the help thus far. Now that I know better what I'm looking for I've posted a bunch more pics on the site at
http://www.motosportsdesign.com/stevest/Luger - you can click on any individual picture for a 12mp high res shot if you want to look at more detail all of the pictures below are there as well in higher res. I'm just copying them here as well so there's an ongoing record here as requested above. Hopefully this greater detail will help in determining a value for the gun. I'd greatly appreciate your guys help with figuring out a fair value for the gun as this will help me to put a dark time in my families life behind us - and I'm sure that's what my grandfather would want me to do (as much as I hate to do it). I plan on offering it for sale here to you guys first, because of the wealth of information I'm getting from you I think it's only fair to offer it up here first and I want to price it fairly.
I've taken pictures off all of the parts I could find with serial numbers and any proof marks that I could find. I'll post a few photos below with details in the posts. I'm only putting the ones with proofs here. If you look at the site linked above you'll see all the photos with the serial numbered parts - all are numbers matching.