[mrerick]

I suppose it could be a thoroughly worn off finish, but that is so reflective (even considering the flash) that the picture of the top of the receiver looks like it's been plated. Look at the pattern of ribbing around the knobs.

You'll need better pictures taken in natural light without a flash to show the finish more accurately. You could ask her if it's silver or black in color. Any portion that has been plated this way affects it's value. Note that small parts are normally ina gold color (called "strawing").

You can find pictures of an original finish Luger in our FAQ document (follow the link) or in a number of posts here.

In any case, the values remain as i mentioned.