my first luger

Hey All

This is my first attempt at buying one of these fine pistols. The one in question has 1939(looks engraved) over the chamber, serial # XX26 with the last three digits repeated on toggel,clip and barrel. Pistol has good blue(looks new not reblue) and sharp checkering on grips with one matching aluminum bottom clip. I see no signs of a maker and need advice on the markings( where or who to ask)

Thanks

Mike

Guam