1916, serial number 6065m, walnut stock, marked on the receiver ring WAFFENFABRIK/MAUSER A-G/OBERNDORF A/N/1916, with a cleaning rod, reproduction leather sling.
At the beginning of 1944, most German factories were stamping the full serial number on the bolt handle root. The last two digits of the serial number should appear on most of the smaller parts. The “K” date Mauser K98k had a solid walnut stock with a flat milled buttplate on it. Mauser would supply the blueprints and the tooling, gauges to other manufacturers and receive a royalty for each.
German Mauser Pistol Serial Numbers Mauser Rifle Serial Numbers Database