Will,
Re : The right side wooden grip.
It may be the coarse checkering of a Javanese arsenal replacement. Can you look to see if you see the stamping of "GS" along the inside surface of the right grip ?
If yes...it is still a nice grip to have on this Luger...
I have lightened-up two of your photos to some more details of your grips :
BTW...can you describe or show a photo of the bottom of your magazine's wooden bottom. Is there a flat metal tab inletted into the bottom of the wood ? If yes, you might be lucky to have a Dutch magazine as well. Those sell for over $ 300 just by themselves...
Here is a photo of the magazine on my Luger :
