What does "P.P.K." mean?

[Don M]

While researching Weimar police unit marks, I have run across reference to a Model 1914 Mauser, s/n 250756, with a 1920 property stamp and two unit marks: â??P.P.K.736â?� in the pocket on the right side of the frame and â??PBg.24.â?� on the front grip strap. Apparently, neither mark is canceled. The mark on the grip strap is consistent with the 1932 Prussian police marking orders for the police academy at Burg in the province of Sachsen. I have no idea what the other mark means. I suspect it is Prussian, applied prior to the 1922 Prussian marking orders, and probably represents a unit in Sachsen Province. This last speculation is based on the positive identification of the second mark and the assumption that these pistols were unlikely to move from state to state or province to province. Iâ??m also inclined to believe it is a police mark because of the â??Pâ?�s and the fact that the second mark is police. However, all this is very speculative. I have looked at a map of the province in 1925 and there are several towns beginning with â??Kâ?� but have no further clues. Any ideas?