Imperial German Army Erfurt Arsenal Manufactured 1913 P.08 Luger Pistol.  Fully rigged out with a an Otto Sindel 1915 dated holster and proofed tool.    The pistol is unit marked to an machine gun unit. Erfurt Arsenal produced 23000 Lugers in 1913.  Maschinengewehr manual included. Central Powers Pistols p. xvi.