Please help identify this DWM Luger

[Synergy]

I just got this Luger from my grandfather. He was a US Army Staff Sargent in the 702d BSB, 2nd ID. He landed on Omaha D+3. For a long time I have known about this Luger. I finally have it in my possession. My grandmother is anti-gun and sold off a lot of other C&R firearms my grandfather had from the war and inheritances. This gun has not been fired since WWII.

I have all the photos on my own photo hosting site
http://s2.photobucket.com/albums/y39/Icemedic/Luger/

From what I have read:
-Its a Deutsche Waffen und Munitionsfabriken (DWM)
-Serial is 2507 all the numbers match, even on the mag.
-Couple proof marks hard to see in the photos, one on the barrel and one on I believe the front link
-41 is stamped above the barrel, no idea what this means. Year of mfg?
-Any estimate on value? THIS LUGER IS NOT FOR SALE. Its part of my families history. Now if only my grandfathers brother would give back his 1911 from WWII.

Thanks