Identification question

[dwreills]

I have what I believe to be a commercial 7.65/.30 Luger for the export market of new manufacture post WWI. All numbers I can find match except the mag which I bought at a gun show several years ago. Under the barrel is a "crowned" capital N, the number 1568 below that and a cursive M below that. The crowned N appears also on the left of the chamber and the left of the breechblock. The number 68 appears on the trigger, side plate, locking bolt/lever(not sure of correct term), and rear of toggle. 1568 also appears with the cursive M on the front of the frame below the barrel. It is stamped MADE IN GERMANY on the right of the chamber. It is salt blued with wheat parts, no grip safety, GESICHERT shows with lever at rear position of thumb safety, GELADEN on left side of extractor. Walnut checkered grips without border, has stock lugs, DWM on top of toggle with knurled knobs. There are no numbers below the 3 11/16" barrel "witness" marks but there is a small stamp mark that I cannot decipher. There are no marks in the magazine area. Any info would be appreciated. Thanks, David