Rumor has it, that the French had removed the P-38 production tooling, jigs, and dies from the Mauser plant before finally destroying it. When the new West German government wanted to adopt the P-38 pistol, Walther had the plans but no production plant. The Walther family escaped to the West, bringing with them the critical production plans for the Walther firearms. When WWII ended, the Walther plant was completely bombed out.
That's because they're AREN'T any 'German made' PP series pistols, and haven't been any since 1945. 'I have owned both Manurhin and Walther produced PPK/S's and the Manurhin guns struck me as being every bit the equal of the German built guns.'