My mistake, different company, same regiment, which proves the armorer/s were consistent with his/their markings. Jeff does not quote the ser#. What would be interesting to see if it was the same armorer by examining the markings either by Luger or photographs and to find out if both markings are both on the trigger guard also, since both Lugers are 1915 dated, Jeff might know. He doesn't say in his book. I'll go through the years later today and see if he has anymore listed under the other years. DWM 1915 3.M.G.K.N.14. L.J.R.K.W.II.N.2. <two lines> (Maschinengewehr-Kompagnie 3, Waffe Nr.14) (Landwehr Infantry-Regiment Kaiser Wilhelm II Nr. 2) Jeff is a member here and he might be interested in having your info for his reference materials. I can't scan it, my scanner went on the bum just before Christmas and I haven't replacement it yet.